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Finding the Fourth Proportional to 488,130.20, 731,976.60 and 221,753.60

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Solution

The fourth proportional to 488,130.20, 731,976.60 and 221,753.60 is: 332,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,130.20 : 731,976.60 = 221,753.60 : x
  2. Step 2: Convert to fraction form
    488,130.20/731,976.60 = 221,753.60/x
  3. Step 3: Cross multiply
    488,130.20x = 731,976.60 × 221,753.60
  4. Step 4: Simplify right side
    488,130.20x = 162,318,446,165.76
  5. Step 5: Solve for x
    x = 162,318,446,165.76/488,130.20
  6. Step 6: Final answer
    x = 332,531.05

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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.