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Finding the Fourth Proportional to 521,576.10, 782,364.15 and 255,507.30

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Solution

The fourth proportional to 521,576.10, 782,364.15 and 255,507.30 is: 383,260.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,576.10 : 782,364.15 = 255,507.30 : x
  2. Step 2: Convert to fraction form
    521,576.10/782,364.15 = 255,507.30/x
  3. Step 3: Cross multiply
    521,576.10x = 782,364.15 × 255,507.30
  4. Step 4: Simplify right side
    521,576.10x = 199,899,751,583.30
  5. Step 5: Solve for x
    x = 199,899,751,583.30/521,576.10
  6. Step 6: Final answer
    x = 383,260.95

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Similar ratio
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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.