Home / 343,743.60-515,615.40-143,997.60

Finding the Fourth Proportional to 343,743.60, 515,615.40 and 143,997.60

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Solution

The fourth proportional to 343,743.60, 515,615.40 and 143,997.60 is: 215,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,743.60 : 515,615.40 = 143,997.60 : x
  2. Step 2: Convert to fraction form
    343,743.60/515,615.40 = 143,997.60/x
  3. Step 3: Cross multiply
    343,743.60x = 515,615.40 × 143,997.60
  4. Step 4: Simplify right side
    343,743.60x = 74,247,380,123.04
  5. Step 5: Solve for x
    x = 74,247,380,123.04/343,743.60
  6. Step 6: Final answer
    x = 215,996.40

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Similar ratio
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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.