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Finding the Fourth Proportional to 143,550.20, 215,371.20 and 43,729.40

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Solution

The fourth proportional to 143,550.20, 215,371.20 and 43,729.40 is: 65,608.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,550.20 : 215,371.20 = 43,729.40 : x
  2. Step 2: Convert to fraction form
    143,550.20/215,371.20 = 43,729.40/x
  3. Step 3: Cross multiply
    143,550.20x = 215,371.20 × 43,729.40
  4. Step 4: Simplify right side
    143,550.20x = 9,418,053,353.28
  5. Step 5: Solve for x
    x = 9,418,053,353.28/143,550.20
  6. Step 6: Final answer
    x = 65,608.08

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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.