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Finding the Third Proportional to 135,427.50 and 209,587.50

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Solution

The third proportional to 135,427.50 and 209,587.50 is: 324,357.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,427.50 : 209,587.50 = 209,587.50 : x
  2. Step 2: Convert to fraction form
    135,427.50/209,587.50 = 209,587.50/x
  3. Step 3: Cross multiply
    135,427.50x = 209,587.50 × 209,587.50
  4. Step 4: Simplify right side
    135,427.50x = 43,926,920,156.25
  5. Step 5: Solve for x
    x = 43,926,920,156.25/135,427.50
  6. Step 6: Final answer
    x = 324,357.46

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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.