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Finding the Fourth Proportional to 521,730.70, 782,596.05 and 255,532.30

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Solution

The fourth proportional to 521,730.70, 782,596.05 and 255,532.30 is: 383,298.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,730.70 : 782,596.05 = 255,532.30 : x
  2. Step 2: Convert to fraction form
    521,730.70/782,596.05 = 255,532.30/x
  3. Step 3: Cross multiply
    521,730.70x = 782,596.05 × 255,532.30
  4. Step 4: Simplify right side
    521,730.70x = 199,978,568,627.42
  5. Step 5: Solve for x
    x = 199,978,568,627.42/521,730.70
  6. Step 6: Final answer
    x = 383,298.45

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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.