Home / 391,143,967.20-539,747,079.12-226,142,172

Finding the Fourth Proportional to 391,143,967.20, 539,747,079.12 and 226,142,172

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Solution

The fourth proportional to 391,143,967.20, 539,747,079.12 and 226,142,172 is: 312,057,930.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,143,967.20 : 539,747,079.12 = 226,142,172 : x
  2. Step 2: Convert to fraction form
    391,143,967.20/539,747,079.12 = 226,142,172/x
  3. Step 3: Cross multiply
    391,143,967.20x = 539,747,079.12 × 226,142,172
  4. Step 4: Simplify right side
    391,143,967.20x = 122,059,576,802,852,656
  5. Step 5: Solve for x
    x = 122,059,576,802,852,656/391,143,967.20
  6. Step 6: Final answer
    x = 312,057,930.17

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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.