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Finding the Fourth Proportional to 387,034.52, 580,557.92 and 147,152.08

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Solution

The fourth proportional to 387,034.52, 580,557.92 and 147,152.08 is: 220,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,034.52 : 580,557.92 = 147,152.08 : x
  2. Step 2: Convert to fraction form
    387,034.52/580,557.92 = 147,152.08/x
  3. Step 3: Cross multiply
    387,034.52x = 580,557.92 × 147,152.08
  4. Step 4: Simplify right side
    387,034.52x = 85,430,305,488.47
  5. Step 5: Solve for x
    x = 85,430,305,488.47/387,034.52
  6. Step 6: Final answer
    x = 220,730.45

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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.