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Finding the Fourth Proportional to 487,652.20, 731,478.30 and 238,820.20

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Solution

The fourth proportional to 487,652.20, 731,478.30 and 238,820.20 is: 358,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,652.20 : 731,478.30 = 238,820.20 : x
  2. Step 2: Convert to fraction form
    487,652.20/731,478.30 = 238,820.20/x
  3. Step 3: Cross multiply
    487,652.20x = 731,478.30 × 238,820.20
  4. Step 4: Simplify right side
    487,652.20x = 174,691,793,901.66
  5. Step 5: Solve for x
    x = 174,691,793,901.66/487,652.20
  6. Step 6: Final answer
    x = 358,230.30

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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.