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Finding the Fourth Proportional to 488,263.28, 731,520.12 and 172,518.80

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Solution

The fourth proportional to 488,263.28, 731,520.12 and 172,518.80 is: 258,469.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,263.28 : 731,520.12 = 172,518.80 : x
  2. Step 2: Convert to fraction form
    488,263.28/731,520.12 = 172,518.80/x
  3. Step 3: Cross multiply
    488,263.28x = 731,520.12 × 172,518.80
  4. Step 4: Simplify right side
    488,263.28x = 126,200,973,278.26
  5. Step 5: Solve for x
    x = 126,200,973,278.26/488,263.28
  6. Step 6: Final answer
    x = 258,469.11

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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.