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Finding the Third Proportional to 142,789.50 and 310,197.38

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Solution

The third proportional to 142,789.50 and 310,197.38 is: 673,875.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,789.50 : 310,197.38 = 310,197.38 : x
  2. Step 2: Convert to fraction form
    142,789.50/310,197.38 = 310,197.38/x
  3. Step 3: Cross multiply
    142,789.50x = 310,197.38 × 310,197.38
  4. Step 4: Simplify right side
    142,789.50x = 96,222,411,456.89
  5. Step 5: Solve for x
    x = 96,222,411,456.89/142,789.50
  6. Step 6: Final answer
    x = 673,875.96

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.