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Finding the Fourth Proportional to 387,219.48, 580,741.53 and 147,247.53

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Solution

The fourth proportional to 387,219.48, 580,741.53 and 147,247.53 is: 220,837.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,219.48 : 580,741.53 = 147,247.53 : x
  2. Step 2: Convert to fraction form
    387,219.48/580,741.53 = 147,247.53/x
  3. Step 3: Cross multiply
    387,219.48x = 580,741.53 × 147,247.53
  4. Step 4: Simplify right side
    387,219.48x = 85,512,755,860.92
  5. Step 5: Solve for x
    x = 85,512,755,860.92/387,219.48
  6. Step 6: Final answer
    x = 220,837.95

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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.