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Finding the Fourth Proportional to 440,161.66, 660,120.54 and 155,814.75

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Solution

The fourth proportional to 440,161.66, 660,120.54 and 155,814.75 is: 233,678.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,161.66 : 660,120.54 = 155,814.75 : x
  2. Step 2: Convert to fraction form
    440,161.66/660,120.54 = 155,814.75/x
  3. Step 3: Cross multiply
    440,161.66x = 660,120.54 × 155,814.75
  4. Step 4: Simplify right side
    440,161.66x = 102,856,516,909.97
  5. Step 5: Solve for x
    x = 102,856,516,909.97/440,161.66
  6. Step 6: Final answer
    x = 233,678.96

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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.