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Finding the Fourth Proportional to 247,608.72, 341,721.18 and 140,197.68

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Solution

The fourth proportional to 247,608.72, 341,721.18 and 140,197.68 is: 193,484.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,608.72 : 341,721.18 = 140,197.68 : x
  2. Step 2: Convert to fraction form
    247,608.72/341,721.18 = 140,197.68/x
  3. Step 3: Cross multiply
    247,608.72x = 341,721.18 × 140,197.68
  4. Step 4: Simplify right side
    247,608.72x = 47,908,516,642.86
  5. Step 5: Solve for x
    x = 47,908,516,642.86/247,608.72
  6. Step 6: Final answer
    x = 193,484.77

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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.