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Finding the Fourth Proportional to 443,172.42, 611,577.42 and 261,949.71

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Solution

The fourth proportional to 443,172.42, 611,577.42 and 261,949.71 is: 361,490.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,172.42 : 611,577.42 = 261,949.71 : x
  2. Step 2: Convert to fraction form
    443,172.42/611,577.42 = 261,949.71/x
  3. Step 3: Cross multiply
    443,172.42x = 611,577.42 × 261,949.71
  4. Step 4: Simplify right side
    443,172.42x = 160,202,527,811.55
  5. Step 5: Solve for x
    x = 160,202,527,811.55/443,172.42
  6. Step 6: Final answer
    x = 361,490.29

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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.