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Finding the Fourth Proportional to 482,788.75, 724,250.80 and 145,791.20

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Solution

The fourth proportional to 482,788.75, 724,250.80 and 145,791.20 is: 218,707.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,788.75 : 724,250.80 = 145,791.20 : x
  2. Step 2: Convert to fraction form
    482,788.75/724,250.80 = 145,791.20/x
  3. Step 3: Cross multiply
    482,788.75x = 724,250.80 × 145,791.20
  4. Step 4: Simplify right side
    482,788.75x = 105,589,393,232.96
  5. Step 5: Solve for x
    x = 105,589,393,232.96/482,788.75
  6. Step 6: Final answer
    x = 218,707.24

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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.