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Finding the Third Proportional to 121,217.50 and 264,465.50

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Solution

The third proportional to 121,217.50 and 264,465.50 is: 576,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,217.50 : 264,465.50 = 264,465.50 : x
  2. Step 2: Convert to fraction form
    121,217.50/264,465.50 = 264,465.50/x
  3. Step 3: Cross multiply
    121,217.50x = 264,465.50 × 264,465.50
  4. Step 4: Simplify right side
    121,217.50x = 69,942,000,690.25
  5. Step 5: Solve for x
    x = 69,942,000,690.25/121,217.50
  6. Step 6: Final answer
    x = 576,995.90

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.