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Finding the Fourth Proportional to 440,490.42, 660,731.99 and 261,814.14

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Solution

The fourth proportional to 440,490.42, 660,731.99 and 261,814.14 is: 392,719.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,490.42 : 660,731.99 = 261,814.14 : x
  2. Step 2: Convert to fraction form
    440,490.42/660,731.99 = 261,814.14/x
  3. Step 3: Cross multiply
    440,490.42x = 660,731.99 × 261,814.14
  4. Step 4: Simplify right side
    440,490.42x = 172,988,976,423.27
  5. Step 5: Solve for x
    x = 172,988,976,423.27/440,490.42
  6. Step 6: Final answer
    x = 392,719.04

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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.