Home / 371,900,423.98-557,678,251.68-138,668,512.78

Finding the Fourth Proportional to 371,900,423.98, 557,678,251.68 and 138,668,512.78

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Solution

The fourth proportional to 371,900,423.98, 557,678,251.68 and 138,668,512.78 is: 207,938,493.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,900,423.98 : 557,678,251.68 = 138,668,512.78 : x
  2. Step 2: Convert to fraction form
    371,900,423.98/557,678,251.68 = 138,668,512.78/x
  3. Step 3: Cross multiply
    371,900,423.98x = 557,678,251.68 × 138,668,512.78
  4. Step 4: Simplify right side
    371,900,423.98x = 77,332,413,770,216,128
  5. Step 5: Solve for x
    x = 77,332,413,770,216,128/371,900,423.98
  6. Step 6: Final answer
    x = 207,938,493.17

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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.