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Finding the Fourth Proportional to 443,384.31, 611,651.13 and 262,008.51

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Solution

The fourth proportional to 443,384.31, 611,651.13 and 262,008.51 is: 361,442.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,384.31 : 611,651.13 = 262,008.51 : x
  2. Step 2: Convert to fraction form
    443,384.31/611,651.13 = 262,008.51/x
  3. Step 3: Cross multiply
    443,384.31x = 611,651.13 × 262,008.51
  4. Step 4: Simplify right side
    443,384.31x = 160,257,801,211.12
  5. Step 5: Solve for x
    x = 160,257,801,211.12/443,384.31
  6. Step 6: Final answer
    x = 361,442.20

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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.