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Finding the Fourth Proportional to 329,675.20, 494,296.80 and 129,875.20

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Solution

The fourth proportional to 329,675.20, 494,296.80 and 129,875.20 is: 194,727.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,675.20 : 494,296.80 = 129,875.20 : x
  2. Step 2: Convert to fraction form
    329,675.20/494,296.80 = 129,875.20/x
  3. Step 3: Cross multiply
    329,675.20x = 494,296.80 × 129,875.20
  4. Step 4: Simplify right side
    329,675.20x = 64,196,895,759.36
  5. Step 5: Solve for x
    x = 64,196,895,759.36/329,675.20
  6. Step 6: Final answer
    x = 194,727.71

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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.