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Finding the Fourth Proportional to 521,567.10, 782,869.05 and 255,627.90

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Solution

The fourth proportional to 521,567.10, 782,869.05 and 255,627.90 is: 383,695.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,567.10 : 782,869.05 = 255,627.90 : x
  2. Step 2: Convert to fraction form
    521,567.10/782,869.05 = 255,627.90/x
  3. Step 3: Cross multiply
    521,567.10x = 782,869.05 × 255,627.90
  4. Step 4: Simplify right side
    521,567.10x = 200,123,171,226.50
  5. Step 5: Solve for x
    x = 200,123,171,226.50/521,567.10
  6. Step 6: Final answer
    x = 383,695.93

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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.