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Finding the Third Proportional to 180,909 and 265,939.50

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Solution

The third proportional to 180,909 and 265,939.50 is: 390,935.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,909 : 265,939.50 = 265,939.50 : x
  2. Step 2: Convert to fraction form
    180,909/265,939.50 = 265,939.50/x
  3. Step 3: Cross multiply
    180,909x = 265,939.50 × 265,939.50
  4. Step 4: Simplify right side
    180,909x = 70,723,817,660.25
  5. Step 5: Solve for x
    x = 70,723,817,660.25/180,909
  6. Step 6: Final answer
    x = 390,935.87

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.