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Finding the Third Proportional to 129,040.59 and 278,842.50

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Solution

The third proportional to 129,040.59 and 278,842.50 is: 602,547.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,040.59 : 278,842.50 = 278,842.50 : x
  2. Step 2: Convert to fraction form
    129,040.59/278,842.50 = 278,842.50/x
  3. Step 3: Cross multiply
    129,040.59x = 278,842.50 × 278,842.50
  4. Step 4: Simplify right side
    129,040.59x = 77,753,139,806.25
  5. Step 5: Solve for x
    x = 77,753,139,806.25/129,040.59
  6. Step 6: Final answer
    x = 602,547.91

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.