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Finding the Fourth Proportional to 318,902.40, 479,390.40 and 226,051.20

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Solution

The fourth proportional to 318,902.40, 479,390.40 and 226,051.20 is: 339,811.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,902.40 : 479,390.40 = 226,051.20 : x
  2. Step 2: Convert to fraction form
    318,902.40/479,390.40 = 226,051.20/x
  3. Step 3: Cross multiply
    318,902.40x = 479,390.40 × 226,051.20
  4. Step 4: Simplify right side
    318,902.40x = 108,366,775,188.48
  5. Step 5: Solve for x
    x = 108,366,775,188.48/318,902.40
  6. Step 6: Final answer
    x = 339,811.73

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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.