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Finding the Fourth Proportional to 443,366.78, 665,143.57 and 143,823.97

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Solution

The fourth proportional to 443,366.78, 665,143.57 and 143,823.97 is: 215,766.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,366.78 : 665,143.57 = 143,823.97 : x
  2. Step 2: Convert to fraction form
    443,366.78/665,143.57 = 143,823.97/x
  3. Step 3: Cross multiply
    443,366.78x = 665,143.57 × 143,823.97
  4. Step 4: Simplify right side
    443,366.78x = 95,663,584,812.54
  5. Step 5: Solve for x
    x = 95,663,584,812.54/443,366.78
  6. Step 6: Final answer
    x = 215,766.25

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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.