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Finding the Fourth Proportional to 144,987.60, 217,481.40 and 133,615.20

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Solution

The fourth proportional to 144,987.60, 217,481.40 and 133,615.20 is: 200,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,987.60 : 217,481.40 = 133,615.20 : x
  2. Step 2: Convert to fraction form
    144,987.60/217,481.40 = 133,615.20/x
  3. Step 3: Cross multiply
    144,987.60x = 217,481.40 × 133,615.20
  4. Step 4: Simplify right side
    144,987.60x = 29,058,820,757.28
  5. Step 5: Solve for x
    x = 29,058,820,757.28/144,987.60
  6. Step 6: Final answer
    x = 200,422.80

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1.5x scale

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.