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Finding the Fourth Proportional to 329,246.40, 493,869.60 and 129,573.30

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Solution

The fourth proportional to 329,246.40, 493,869.60 and 129,573.30 is: 194,359.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,246.40 : 493,869.60 = 129,573.30 : x
  2. Step 2: Convert to fraction form
    329,246.40/493,869.60 = 129,573.30/x
  3. Step 3: Cross multiply
    329,246.40x = 493,869.60 × 129,573.30
  4. Step 4: Simplify right side
    329,246.40x = 63,992,313,841.68
  5. Step 5: Solve for x
    x = 63,992,313,841.68/329,246.40
  6. Step 6: Final answer
    x = 194,359.95

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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.