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Finding the Fourth Proportional to 329,606.40, 494,539.20 and 129,892.80

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Solution

The fourth proportional to 329,606.40, 494,539.20 and 129,892.80 is: 194,890.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,606.40 : 494,539.20 = 129,892.80 : x
  2. Step 2: Convert to fraction form
    329,606.40/494,539.20 = 129,892.80/x
  3. Step 3: Cross multiply
    329,606.40x = 494,539.20 × 129,892.80
  4. Step 4: Simplify right side
    329,606.40x = 64,237,081,397.76
  5. Step 5: Solve for x
    x = 64,237,081,397.76/329,606.40
  6. Step 6: Final answer
    x = 194,890.27

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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.