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Finding the Fourth Proportional to 488,006.40, 732,129.60 and 168,163.20

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Solution

The fourth proportional to 488,006.40, 732,129.60 and 168,163.20 is: 252,286.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,006.40 : 732,129.60 = 168,163.20 : x
  2. Step 2: Convert to fraction form
    488,006.40/732,129.60 = 168,163.20/x
  3. Step 3: Cross multiply
    488,006.40x = 732,129.60 × 168,163.20
  4. Step 4: Simplify right side
    488,006.40x = 123,117,256,350.72
  5. Step 5: Solve for x
    x = 123,117,256,350.72/488,006.40
  6. Step 6: Final answer
    x = 252,286.15

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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.