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Finding the Fourth Proportional to 440,249.68, 660,670.43 and 155,939.21

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Solution

The fourth proportional to 440,249.68, 660,670.43 and 155,939.21 is: 234,013.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,249.68 : 660,670.43 = 155,939.21 : x
  2. Step 2: Convert to fraction form
    440,249.68/660,670.43 = 155,939.21/x
  3. Step 3: Cross multiply
    440,249.68x = 660,670.43 × 155,939.21
  4. Step 4: Simplify right side
    440,249.68x = 103,024,423,319.03
  5. Step 5: Solve for x
    x = 103,024,423,319.03/440,249.68
  6. Step 6: Final answer
    x = 234,013.62

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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.