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Finding the Fourth Proportional to 143,455.77, 215,191.31 and 43,608.29

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Solution

The fourth proportional to 143,455.77, 215,191.31 and 43,608.29 is: 65,414.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,455.77 : 215,191.31 = 43,608.29 : x
  2. Step 2: Convert to fraction form
    143,455.77/215,191.31 = 43,608.29/x
  3. Step 3: Cross multiply
    143,455.77x = 215,191.31 × 43,608.29
  4. Step 4: Simplify right side
    143,455.77x = 9,384,123,757.96
  5. Step 5: Solve for x
    x = 9,384,123,757.96/143,455.77
  6. Step 6: Final answer
    x = 65,414.75

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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.