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Finding the Third Proportional to 121,490 and 266,376

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Solution

The third proportional to 121,490 and 266,376 is: 584,049.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,490 : 266,376 = 266,376 : x
  2. Step 2: Convert to fraction form
    121,490/266,376 = 266,376/x
  3. Step 3: Cross multiply
    121,490x = 266,376 × 266,376
  4. Step 4: Simplify right side
    121,490x = 70,956,173,376
  5. Step 5: Solve for x
    x = 70,956,173,376/121,490
  6. Step 6: Final answer
    x = 584,049.50

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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.