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Finding the Fourth Proportional to 247,997.57, 342,239.51 and 137,618.48

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Solution

The fourth proportional to 247,997.57, 342,239.51 and 137,618.48 is: 189,915.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,997.57 : 342,239.51 = 137,618.48 : x
  2. Step 2: Convert to fraction form
    247,997.57/342,239.51 = 137,618.48/x
  3. Step 3: Cross multiply
    247,997.57x = 342,239.51 × 137,618.48
  4. Step 4: Simplify right side
    247,997.57x = 47,098,480,726.98
  5. Step 5: Solve for x
    x = 47,098,480,726.98/247,997.57
  6. Step 6: Final answer
    x = 189,915.09

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1.5x scale

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.