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Finding the Third Proportional to 142,979.56 and 308,119.56

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Solution

The third proportional to 142,979.56 and 308,119.56 is: 663,994.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,979.56 : 308,119.56 = 308,119.56 : x
  2. Step 2: Convert to fraction form
    142,979.56/308,119.56 = 308,119.56/x
  3. Step 3: Cross multiply
    142,979.56x = 308,119.56 × 308,119.56
  4. Step 4: Simplify right side
    142,979.56x = 94,937,664,795.19
  5. Step 5: Solve for x
    x = 94,937,664,795.19/142,979.56
  6. Step 6: Final answer
    x = 663,994.65

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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.