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Finding the Fourth Proportional to 440,081.28, 659,717.76 and 159,530.88

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Solution

The fourth proportional to 440,081.28, 659,717.76 and 159,530.88 is: 239,149.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,081.28 : 659,717.76 = 159,530.88 : x
  2. Step 2: Convert to fraction form
    440,081.28/659,717.76 = 159,530.88/x
  3. Step 3: Cross multiply
    440,081.28x = 659,717.76 × 159,530.88
  4. Step 4: Simplify right side
    440,081.28x = 105,245,354,804.43
  5. Step 5: Solve for x
    x = 105,245,354,804.43/440,081.28
  6. Step 6: Final answer
    x = 239,149.81

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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.