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Finding the Third Proportional to 181,218 and 266,490

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Solution

The third proportional to 181,218 and 266,490 is: 391,886.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,218 : 266,490 = 266,490 : x
  2. Step 2: Convert to fraction form
    181,218/266,490 = 266,490/x
  3. Step 3: Cross multiply
    181,218x = 266,490 × 266,490
  4. Step 4: Simplify right side
    181,218x = 71,016,920,100
  5. Step 5: Solve for x
    x = 71,016,920,100/181,218
  6. Step 6: Final answer
    x = 391,886.68

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.