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Finding the Fourth Proportional to 247,672.36, 341,764.20 and 140,221.42

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Solution

The fourth proportional to 247,672.36, 341,764.20 and 140,221.42 is: 193,492.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,672.36 : 341,764.20 = 140,221.42 : x
  2. Step 2: Convert to fraction form
    247,672.36/341,764.20 = 140,221.42/x
  3. Step 3: Cross multiply
    247,672.36x = 341,764.20 × 140,221.42
  4. Step 4: Simplify right side
    247,672.36x = 47,922,661,429.16
  5. Step 5: Solve for x
    x = 47,922,661,429.16/247,672.36
  6. Step 6: Final answer
    x = 193,492.17

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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.