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Finding the Third Proportional to 56,319 and 121,332

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Solution

The third proportional to 56,319 and 121,332 is: 261,394.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,319 : 121,332 = 121,332 : x
  2. Step 2: Convert to fraction form
    56,319/121,332 = 121,332/x
  3. Step 3: Cross multiply
    56,319x = 121,332 × 121,332
  4. Step 4: Simplify right side
    56,319x = 14,721,454,224
  5. Step 5: Solve for x
    x = 14,721,454,224/56,319
  6. Step 6: Final answer
    x = 261,394.10

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.