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Finding the Fourth Proportional to 144,828, 217,232.28 and 39,647.88

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Solution

The fourth proportional to 144,828, 217,232.28 and 39,647.88 is: 59,469.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,828 : 217,232.28 = 39,647.88 : x
  2. Step 2: Convert to fraction form
    144,828/217,232.28 = 39,647.88/x
  3. Step 3: Cross multiply
    144,828x = 217,232.28 × 39,647.88
  4. Step 4: Simplify right side
    144,828x = 8,612,799,369.57
  5. Step 5: Solve for x
    x = 8,612,799,369.57/144,828
  6. Step 6: Final answer
    x = 59,469.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.