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Finding the Fourth Proportional to 440,081.72, 660,178.16 and 124,538.73

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Solution

The fourth proportional to 440,081.72, 660,178.16 and 124,538.73 is: 186,823.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,081.72 : 660,178.16 = 124,538.73 : x
  2. Step 2: Convert to fraction form
    440,081.72/660,178.16 = 124,538.73/x
  3. Step 3: Cross multiply
    440,081.72x = 660,178.16 × 124,538.73
  4. Step 4: Simplify right side
    440,081.72x = 82,217,749,620.14
  5. Step 5: Solve for x
    x = 82,217,749,620.14/440,081.72
  6. Step 6: Final answer
    x = 186,823.82

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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.