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Finding the Fourth Proportional to 521,759.20, 782,565.90 and 166,809.10

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Solution

The fourth proportional to 521,759.20, 782,565.90 and 166,809.10 is: 250,190.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,759.20 : 782,565.90 = 166,809.10 : x
  2. Step 2: Convert to fraction form
    521,759.20/782,565.90 = 166,809.10/x
  3. Step 3: Cross multiply
    521,759.20x = 782,565.90 × 166,809.10
  4. Step 4: Simplify right side
    521,759.20x = 130,539,113,469.69
  5. Step 5: Solve for x
    x = 130,539,113,469.69/521,759.20
  6. Step 6: Final answer
    x = 250,190.34

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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.