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Finding the Third Proportional to 121,359 and 262,590

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Solution

The third proportional to 121,359 and 262,590 is: 568,177.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,359 : 262,590 = 262,590 : x
  2. Step 2: Convert to fraction form
    121,359/262,590 = 262,590/x
  3. Step 3: Cross multiply
    121,359x = 262,590 × 262,590
  4. Step 4: Simplify right side
    121,359x = 68,953,508,100
  5. Step 5: Solve for x
    x = 68,953,508,100/121,359
  6. Step 6: Final answer
    x = 568,177.95

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.