Home / 272,897.10-409,345.65-85,884.30

Finding the Fourth Proportional to 272,897.10, 409,345.65 and 85,884.30

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Solution

The fourth proportional to 272,897.10, 409,345.65 and 85,884.30 is: 128,826.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,897.10 : 409,345.65 = 85,884.30 : x
  2. Step 2: Convert to fraction form
    272,897.10/409,345.65 = 85,884.30/x
  3. Step 3: Cross multiply
    272,897.10x = 409,345.65 × 85,884.30
  4. Step 4: Simplify right side
    272,897.10x = 35,156,364,608.30
  5. Step 5: Solve for x
    x = 35,156,364,608.30/272,897.10
  6. Step 6: Final answer
    x = 128,826.45

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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.