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Finding the Third Proportional to 56,480 and 121,960

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Solution

The third proportional to 56,480 and 121,960 is: 263,354.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,480 : 121,960 = 121,960 : x
  2. Step 2: Convert to fraction form
    56,480/121,960 = 121,960/x
  3. Step 3: Cross multiply
    56,480x = 121,960 × 121,960
  4. Step 4: Simplify right side
    56,480x = 14,874,241,600
  5. Step 5: Solve for x
    x = 14,874,241,600/56,480
  6. Step 6: Final answer
    x = 263,354.14

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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.