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Finding the Third Proportional to 121,999.50 and 264,363.50

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Solution

The third proportional to 121,999.50 and 264,363.50 is: 572,855.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,999.50 : 264,363.50 = 264,363.50 : x
  2. Step 2: Convert to fraction form
    121,999.50/264,363.50 = 264,363.50/x
  3. Step 3: Cross multiply
    121,999.50x = 264,363.50 × 264,363.50
  4. Step 4: Simplify right side
    121,999.50x = 69,888,060,132.25
  5. Step 5: Solve for x
    x = 69,888,060,132.25/121,999.50
  6. Step 6: Final answer
    x = 572,855.30

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.