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Finding the Fourth Proportional to 457,179.18, 685,813.92 and 157,620.39

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Solution

The fourth proportional to 457,179.18, 685,813.92 and 157,620.39 is: 236,446.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,179.18 : 685,813.92 = 157,620.39 : x
  2. Step 2: Convert to fraction form
    457,179.18/685,813.92 = 157,620.39/x
  3. Step 3: Cross multiply
    457,179.18x = 685,813.92 × 157,620.39
  4. Step 4: Simplify right side
    457,179.18x = 108,098,257,537.83
  5. Step 5: Solve for x
    x = 108,098,257,537.83/457,179.18
  6. Step 6: Final answer
    x = 236,446.15

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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.