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Finding the Third Proportional to 129,538.50 and 305,352

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Solution

The third proportional to 129,538.50 and 305,352 is: 719,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,538.50 : 305,352 = 305,352 : x
  2. Step 2: Convert to fraction form
    129,538.50/305,352 = 305,352/x
  3. Step 3: Cross multiply
    129,538.50x = 305,352 × 305,352
  4. Step 4: Simplify right side
    129,538.50x = 93,239,843,904
  5. Step 5: Solve for x
    x = 93,239,843,904/129,538.50
  6. Step 6: Final answer
    x = 719,784.80

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.