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Finding the Third Proportional to 131,590.25 and 289,418.50

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Solution

The third proportional to 131,590.25 and 289,418.50 is: 636,544.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,590.25 : 289,418.50 = 289,418.50 : x
  2. Step 2: Convert to fraction form
    131,590.25/289,418.50 = 289,418.50/x
  3. Step 3: Cross multiply
    131,590.25x = 289,418.50 × 289,418.50
  4. Step 4: Simplify right side
    131,590.25x = 83,763,068,142.25
  5. Step 5: Solve for x
    x = 83,763,068,142.25/131,590.25
  6. Step 6: Final answer
    x = 636,544.64

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.