Home / 521,149.64-781,193.39-221,439.11

Finding the Fourth Proportional to 521,149.64, 781,193.39 and 221,439.11

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Solution

The fourth proportional to 521,149.64, 781,193.39 and 221,439.11 is: 331,933.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,149.64 : 781,193.39 = 221,439.11 : x
  2. Step 2: Convert to fraction form
    521,149.64/781,193.39 = 221,439.11/x
  3. Step 3: Cross multiply
    521,149.64x = 781,193.39 × 221,439.11
  4. Step 4: Simplify right side
    521,149.64x = 172,986,764,006.32
  5. Step 5: Solve for x
    x = 172,986,764,006.32/521,149.64
  6. Step 6: Final answer
    x = 331,933.00

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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.