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Finding the Third Proportional to 140,742.56 and 218,254.50

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Solution

The third proportional to 140,742.56 and 218,254.50 is: 338,455.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,742.56 : 218,254.50 = 218,254.50 : x
  2. Step 2: Convert to fraction form
    140,742.56/218,254.50 = 218,254.50/x
  3. Step 3: Cross multiply
    140,742.56x = 218,254.50 × 218,254.50
  4. Step 4: Simplify right side
    140,742.56x = 47,635,026,770.25
  5. Step 5: Solve for x
    x = 47,635,026,770.25/140,742.56
  6. Step 6: Final answer
    x = 338,455.02

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.