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Finding the Third Proportional to 131,521.50 and 203,421

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Solution

The third proportional to 131,521.50 and 203,421 is: 314,626.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,521.50 : 203,421 = 203,421 : x
  2. Step 2: Convert to fraction form
    131,521.50/203,421 = 203,421/x
  3. Step 3: Cross multiply
    131,521.50x = 203,421 × 203,421
  4. Step 4: Simplify right side
    131,521.50x = 41,380,103,241
  5. Step 5: Solve for x
    x = 41,380,103,241/131,521.50
  6. Step 6: Final answer
    x = 314,626.15

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.