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Finding the Fourth Proportional to 387,062.56, 580,630.56 and 150,423.52

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Solution

The fourth proportional to 387,062.56, 580,630.56 and 150,423.52 is: 225,649.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,062.56 : 580,630.56 = 150,423.52 : x
  2. Step 2: Convert to fraction form
    387,062.56/580,630.56 = 150,423.52/x
  3. Step 3: Cross multiply
    387,062.56x = 580,630.56 × 150,423.52
  4. Step 4: Simplify right side
    387,062.56x = 87,340,492,654.77
  5. Step 5: Solve for x
    x = 87,340,492,654.77/387,062.56
  6. Step 6: Final answer
    x = 225,649.55

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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.