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Finding the Fourth Proportional to 377,930.88, 521,503.92 and 208,154.88

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Solution

The fourth proportional to 377,930.88, 521,503.92 and 208,154.88 is: 287,231.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,930.88 : 521,503.92 = 208,154.88 : x
  2. Step 2: Convert to fraction form
    377,930.88/521,503.92 = 208,154.88/x
  3. Step 3: Cross multiply
    377,930.88x = 521,503.92 × 208,154.88
  4. Step 4: Simplify right side
    377,930.88x = 108,553,585,887.13
  5. Step 5: Solve for x
    x = 108,553,585,887.13/377,930.88
  6. Step 6: Final answer
    x = 287,231.32

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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.