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Finding the Fourth Proportional to 519,732.76, 717,231.20 and 281,268.76

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Solution

The fourth proportional to 519,732.76, 717,231.20 and 281,268.76 is: 388,150.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,732.76 : 717,231.20 = 281,268.76 : x
  2. Step 2: Convert to fraction form
    519,732.76/717,231.20 = 281,268.76/x
  3. Step 3: Cross multiply
    519,732.76x = 717,231.20 × 281,268.76
  4. Step 4: Simplify right side
    519,732.76x = 201,734,730,257.31
  5. Step 5: Solve for x
    x = 201,734,730,257.31/519,732.76
  6. Step 6: Final answer
    x = 388,150.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.