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Finding the Fourth Proportional to 440,799.82, 661,147.17 and 260,992.78

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Solution

The fourth proportional to 440,799.82, 661,147.17 and 260,992.78 is: 391,458.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,799.82 : 661,147.17 = 260,992.78 : x
  2. Step 2: Convert to fraction form
    440,799.82/661,147.17 = 260,992.78/x
  3. Step 3: Cross multiply
    440,799.82x = 661,147.17 × 260,992.78
  4. Step 4: Simplify right side
    440,799.82x = 172,554,637,887.43
  5. Step 5: Solve for x
    x = 172,554,637,887.43/440,799.82
  6. Step 6: Final answer
    x = 391,458.05

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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.