Home / 391,391,760.08-540,120,975-215,182,753.04

Finding the Fourth Proportional to 391,391,760.08, 540,120,975 and 215,182,753.04

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Solution

The fourth proportional to 391,391,760.08, 540,120,975 and 215,182,753.04 is: 296,952,389.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,391,760.08 : 540,120,975 = 215,182,753.04 : x
  2. Step 2: Convert to fraction form
    391,391,760.08/540,120,975 = 215,182,753.04/x
  3. Step 3: Cross multiply
    391,391,760.08x = 540,120,975 × 215,182,753.04
  4. Step 4: Simplify right side
    391,391,760.08x = 116,224,718,375,149,008
  5. Step 5: Solve for x
    x = 116,224,718,375,149,008/391,391,760.08
  6. Step 6: Final answer
    x = 296,952,389.47

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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.