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Finding the Fourth Proportional to 488,131.20, 731,978.10 and 221,754.60

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Solution

The fourth proportional to 488,131.20, 731,978.10 and 221,754.60 is: 332,532.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,131.20 : 731,978.10 = 221,754.60 : x
  2. Step 2: Convert to fraction form
    488,131.20/731,978.10 = 221,754.60/x
  3. Step 3: Cross multiply
    488,131.20x = 731,978.10 × 221,754.60
  4. Step 4: Simplify right side
    488,131.20x = 162,319,510,774.26
  5. Step 5: Solve for x
    x = 162,319,510,774.26/488,131.20
  6. Step 6: Final answer
    x = 332,532.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.