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Finding the Third Proportional to 180,670 and 268,386

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Solution

The third proportional to 180,670 and 268,386 is: 398,688.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,670 : 268,386 = 268,386 : x
  2. Step 2: Convert to fraction form
    180,670/268,386 = 268,386/x
  3. Step 3: Cross multiply
    180,670x = 268,386 × 268,386
  4. Step 4: Simplify right side
    180,670x = 72,031,044,996
  5. Step 5: Solve for x
    x = 72,031,044,996/180,670
  6. Step 6: Final answer
    x = 398,688.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.