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Finding the Third Proportional to 172,423 and 269,110.50

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Solution

The third proportional to 172,423 and 269,110.50 is: 420,016.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,423 : 269,110.50 = 269,110.50 : x
  2. Step 2: Convert to fraction form
    172,423/269,110.50 = 269,110.50/x
  3. Step 3: Cross multiply
    172,423x = 269,110.50 × 269,110.50
  4. Step 4: Simplify right side
    172,423x = 72,420,461,210.25
  5. Step 5: Solve for x
    x = 72,420,461,210.25/172,423
  6. Step 6: Final answer
    x = 420,016.25

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.