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Finding the Third Proportional to 145,750 and 318,500

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Solution

The third proportional to 145,750 and 318,500 is: 696,001.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,750 : 318,500 = 318,500 : x
  2. Step 2: Convert to fraction form
    145,750/318,500 = 318,500/x
  3. Step 3: Cross multiply
    145,750x = 318,500 × 318,500
  4. Step 4: Simplify right side
    145,750x = 101,442,250,000
  5. Step 5: Solve for x
    x = 101,442,250,000/145,750
  6. Step 6: Final answer
    x = 696,001.72

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.