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Finding the Fourth Proportional to 387,093.90, 580,414.86 and 150,159.72

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Solution

The fourth proportional to 387,093.90, 580,414.86 and 150,159.72 is: 225,151.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,093.90 : 580,414.86 = 150,159.72 : x
  2. Step 2: Convert to fraction form
    387,093.90/580,414.86 = 150,159.72/x
  3. Step 3: Cross multiply
    387,093.90x = 580,414.86 × 150,159.72
  4. Step 4: Simplify right side
    387,093.90x = 87,154,932,861.44
  5. Step 5: Solve for x
    x = 87,154,932,861.44/387,093.90
  6. Step 6: Final answer
    x = 225,151.91

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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.