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Finding the Fourth Proportional to 443,651.78, 665,873.16 and 207,127.73

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Solution

The fourth proportional to 443,651.78, 665,873.16 and 207,127.73 is: 310,876.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,651.78 : 665,873.16 = 207,127.73 : x
  2. Step 2: Convert to fraction form
    443,651.78/665,873.16 = 207,127.73/x
  3. Step 3: Cross multiply
    443,651.78x = 665,873.16 × 207,127.73
  4. Step 4: Simplify right side
    443,651.78x = 137,920,796,986.68
  5. Step 5: Solve for x
    x = 137,920,796,986.68/443,651.78
  6. Step 6: Final answer
    x = 310,876.24

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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.