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Finding the Fourth Proportional to 539,639.88, 809,318.71 and 160,458.49

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Solution

The fourth proportional to 539,639.88, 809,318.71 and 160,458.49 is: 240,645.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,639.88 : 809,318.71 = 160,458.49 : x
  2. Step 2: Convert to fraction form
    539,639.88/809,318.71 = 160,458.49/x
  3. Step 3: Cross multiply
    539,639.88x = 809,318.71 × 160,458.49
  4. Step 4: Simplify right side
    539,639.88x = 129,862,058,135.35
  5. Step 5: Solve for x
    x = 129,862,058,135.35/539,639.88
  6. Step 6: Final answer
    x = 240,645.78

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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.