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Finding the Fourth Proportional to 440,179.80, 660,318.30 and 140,609.40

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Solution

The fourth proportional to 440,179.80, 660,318.30 and 140,609.40 is: 210,929.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,179.80 : 660,318.30 = 140,609.40 : x
  2. Step 2: Convert to fraction form
    440,179.80/660,318.30 = 140,609.40/x
  3. Step 3: Cross multiply
    440,179.80x = 660,318.30 × 140,609.40
  4. Step 4: Simplify right side
    440,179.80x = 92,846,959,972.02
  5. Step 5: Solve for x
    x = 92,846,959,972.02/440,179.80
  6. Step 6: Final answer
    x = 210,929.62

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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.