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Finding the Fourth Proportional to 374,103.11, 561,378.23 and 137,469.71

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Solution

The fourth proportional to 374,103.11, 561,378.23 and 137,469.71 is: 206,286.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,103.11 : 561,378.23 = 137,469.71 : x
  2. Step 2: Convert to fraction form
    374,103.11/561,378.23 = 137,469.71/x
  3. Step 3: Cross multiply
    374,103.11x = 561,378.23 × 137,469.71
  4. Step 4: Simplify right side
    374,103.11x = 77,172,504,225.53
  5. Step 5: Solve for x
    x = 77,172,504,225.53/374,103.11
  6. Step 6: Final answer
    x = 206,286.72

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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.