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Finding the Third Proportional to 261,658.50 and 415,005.75

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Solution

The third proportional to 261,658.50 and 415,005.75 is: 658,223.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,658.50 : 415,005.75 = 415,005.75 : x
  2. Step 2: Convert to fraction form
    261,658.50/415,005.75 = 415,005.75/x
  3. Step 3: Cross multiply
    261,658.50x = 415,005.75 × 415,005.75
  4. Step 4: Simplify right side
    261,658.50x = 172,229,772,533.06
  5. Step 5: Solve for x
    x = 172,229,772,533.06/261,658.50
  6. Step 6: Final answer
    x = 658,223.50

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.