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Finding the Third Proportional to 142,543.50 and 306,145.50

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Solution

The third proportional to 142,543.50 and 306,145.50 is: 657,519.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,543.50 : 306,145.50 = 306,145.50 : x
  2. Step 2: Convert to fraction form
    142,543.50/306,145.50 = 306,145.50/x
  3. Step 3: Cross multiply
    142,543.50x = 306,145.50 × 306,145.50
  4. Step 4: Simplify right side
    142,543.50x = 93,725,067,170.25
  5. Step 5: Solve for x
    x = 93,725,067,170.25/142,543.50
  6. Step 6: Final answer
    x = 657,519.05

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.