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Finding the Fourth Proportional to 542,107.20, 748,118.76 and 315,767.28

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Solution

The fourth proportional to 542,107.20, 748,118.76 and 315,767.28 is: 435,765.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,107.20 : 748,118.76 = 315,767.28 : x
  2. Step 2: Convert to fraction form
    542,107.20/748,118.76 = 315,767.28/x
  3. Step 3: Cross multiply
    542,107.20x = 748,118.76 × 315,767.28
  4. Step 4: Simplify right side
    542,107.20x = 236,231,425,962.17
  5. Step 5: Solve for x
    x = 236,231,425,962.17/542,107.20
  6. Step 6: Final answer
    x = 435,765.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.