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Finding the Fourth Proportional to 387,063.28, 580,631.64 and 150,424.24

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Solution

The fourth proportional to 387,063.28, 580,631.64 and 150,424.24 is: 225,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,063.28 : 580,631.64 = 150,424.24 : x
  2. Step 2: Convert to fraction form
    387,063.28/580,631.64 = 150,424.24/x
  3. Step 3: Cross multiply
    387,063.28x = 580,631.64 × 150,424.24
  4. Step 4: Simplify right side
    387,063.28x = 87,341,073,166.95
  5. Step 5: Solve for x
    x = 87,341,073,166.95/387,063.28
  6. Step 6: Final answer
    x = 225,650.63

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1.5x scale

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.