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Finding the Third Proportional to 121,111.50 and 260,733.75

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Solution

The third proportional to 121,111.50 and 260,733.75 is: 561,318.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,111.50 : 260,733.75 = 260,733.75 : x
  2. Step 2: Convert to fraction form
    121,111.50/260,733.75 = 260,733.75/x
  3. Step 3: Cross multiply
    121,111.50x = 260,733.75 × 260,733.75
  4. Step 4: Simplify right side
    121,111.50x = 67,982,088,389.06
  5. Step 5: Solve for x
    x = 67,982,088,389.06/121,111.50
  6. Step 6: Final answer
    x = 561,318.19

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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.