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Finding the Third Proportional to 129,670.88 and 279,343.69

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Solution

The third proportional to 129,670.88 and 279,343.69 is: 601,776.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,670.88 : 279,343.69 = 279,343.69 : x
  2. Step 2: Convert to fraction form
    129,670.88/279,343.69 = 279,343.69/x
  3. Step 3: Cross multiply
    129,670.88x = 279,343.69 × 279,343.69
  4. Step 4: Simplify right side
    129,670.88x = 78,032,895,746.10
  5. Step 5: Solve for x
    x = 78,032,895,746.10/129,670.88
  6. Step 6: Final answer
    x = 601,776.58

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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.