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Finding the Third Proportional to 131,557.50 and 289,354.50

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Solution

The third proportional to 131,557.50 and 289,354.50 is: 636,421.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,557.50 : 289,354.50 = 289,354.50 : x
  2. Step 2: Convert to fraction form
    131,557.50/289,354.50 = 289,354.50/x
  3. Step 3: Cross multiply
    131,557.50x = 289,354.50 × 289,354.50
  4. Step 4: Simplify right side
    131,557.50x = 83,726,026,670.25
  5. Step 5: Solve for x
    x = 83,726,026,670.25/131,557.50
  6. Step 6: Final answer
    x = 636,421.54

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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.