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Finding the Fourth Proportional to 247,609.72, 341,722.56 and 140,198.68

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Solution

The fourth proportional to 247,609.72, 341,722.56 and 140,198.68 is: 193,486.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,609.72 : 341,722.56 = 140,198.68 : x
  2. Step 2: Convert to fraction form
    247,609.72/341,722.56 = 140,198.68/x
  3. Step 3: Cross multiply
    247,609.72x = 341,722.56 × 140,198.68
  4. Step 4: Simplify right side
    247,609.72x = 47,909,051,838.22
  5. Step 5: Solve for x
    x = 47,909,051,838.22/247,609.72
  6. Step 6: Final answer
    x = 193,486.15

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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.