Home / 409,821.62-614,754.30-129,317

Finding the Fourth Proportional to 409,821.62, 614,754.30 and 129,317

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Solution

The fourth proportional to 409,821.62, 614,754.30 and 129,317 is: 193,982.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,821.62 : 614,754.30 = 129,317 : x
  2. Step 2: Convert to fraction form
    409,821.62/614,754.30 = 129,317/x
  3. Step 3: Cross multiply
    409,821.62x = 614,754.30 × 129,317
  4. Step 4: Simplify right side
    409,821.62x = 79,498,181,813.10
  5. Step 5: Solve for x
    x = 79,498,181,813.10/409,821.62
  6. Step 6: Final answer
    x = 193,982.40

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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.