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Finding the Third Proportional to 112,990 and 247,688

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Solution

The third proportional to 112,990 and 247,688 is: 542,962.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,990 : 247,688 = 247,688 : x
  2. Step 2: Convert to fraction form
    112,990/247,688 = 247,688/x
  3. Step 3: Cross multiply
    112,990x = 247,688 × 247,688
  4. Step 4: Simplify right side
    112,990x = 61,349,345,344
  5. Step 5: Solve for x
    x = 61,349,345,344/112,990
  6. Step 6: Final answer
    x = 542,962.61

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.