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Finding the Fourth Proportional to 443,449.76, 611,960.48 and 239,500.64

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Solution

The fourth proportional to 443,449.76, 611,960.48 and 239,500.64 is: 330,510.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,449.76 : 611,960.48 = 239,500.64 : x
  2. Step 2: Convert to fraction form
    443,449.76/611,960.48 = 239,500.64/x
  3. Step 3: Cross multiply
    443,449.76x = 611,960.48 × 239,500.64
  4. Step 4: Simplify right side
    443,449.76x = 146,564,926,614.71
  5. Step 5: Solve for x
    x = 146,564,926,614.71/443,449.76
  6. Step 6: Final answer
    x = 330,510.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.