Home / 206,688,512.20-310,032,768.30-91,897,256.20

Finding the Fourth Proportional to 206,688,512.20, 310,032,768.30 and 91,897,256.20

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Solution

The fourth proportional to 206,688,512.20, 310,032,768.30 and 91,897,256.20 is: 137,845,884.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,688,512.20 : 310,032,768.30 = 91,897,256.20 : x
  2. Step 2: Convert to fraction form
    206,688,512.20/310,032,768.30 = 91,897,256.20/x
  3. Step 3: Cross multiply
    206,688,512.20x = 310,032,768.30 × 91,897,256.20
  4. Step 4: Simplify right side
    206,688,512.20x = 28,491,160,738,860,340
  5. Step 5: Solve for x
    x = 28,491,160,738,860,340/206,688,512.20
  6. Step 6: Final answer
    x = 137,845,884.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.