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Finding the Fourth Proportional to 472,517.88, 708,568.86 and 172,920.60

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Solution

The fourth proportional to 472,517.88, 708,568.86 and 172,920.60 is: 259,304.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,517.88 : 708,568.86 = 172,920.60 : x
  2. Step 2: Convert to fraction form
    472,517.88/708,568.86 = 172,920.60/x
  3. Step 3: Cross multiply
    472,517.88x = 708,568.86 × 172,920.60
  4. Step 4: Simplify right side
    472,517.88x = 122,526,152,412.52
  5. Step 5: Solve for x
    x = 122,526,152,412.52/472,517.88
  6. Step 6: Final answer
    x = 259,304.80

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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.