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Finding the Fourth Proportional to 479,882.25, 662,237.51 and 278,691.21

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Solution

The fourth proportional to 479,882.25, 662,237.51 and 278,691.21 is: 384,593.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,882.25 : 662,237.51 = 278,691.21 : x
  2. Step 2: Convert to fraction form
    479,882.25/662,237.51 = 278,691.21/x
  3. Step 3: Cross multiply
    479,882.25x = 662,237.51 × 278,691.21
  4. Step 4: Simplify right side
    479,882.25x = 184,559,771,575.83
  5. Step 5: Solve for x
    x = 184,559,771,575.83/479,882.25
  6. Step 6: Final answer
    x = 384,593.87

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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.