Home / 521,110.20-781,373.70-221,539.80

Finding the Fourth Proportional to 521,110.20, 781,373.70 and 221,539.80

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Solution

The fourth proportional to 521,110.20, 781,373.70 and 221,539.80 is: 332,185.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,110.20 : 781,373.70 = 221,539.80 : x
  2. Step 2: Convert to fraction form
    521,110.20/781,373.70 = 221,539.80/x
  3. Step 3: Cross multiply
    521,110.20x = 781,373.70 × 221,539.80
  4. Step 4: Simplify right side
    521,110.20x = 173,105,373,223.26
  5. Step 5: Solve for x
    x = 173,105,373,223.26/521,110.20
  6. Step 6: Final answer
    x = 332,185.73

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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.