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Finding the Fourth Proportional to 440,528.72, 660,469.86 and 140,836.82

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Solution

The fourth proportional to 440,528.72, 660,469.86 and 140,836.82 is: 211,151.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,528.72 : 660,469.86 = 140,836.82 : x
  2. Step 2: Convert to fraction form
    440,528.72/660,469.86 = 140,836.82/x
  3. Step 3: Cross multiply
    440,528.72x = 660,469.86 × 140,836.82
  4. Step 4: Simplify right side
    440,528.72x = 93,018,471,485.90
  5. Step 5: Solve for x
    x = 93,018,471,485.90/440,528.72
  6. Step 6: Final answer
    x = 211,151.89

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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.