Home / 257,947.11-355,949.67-143,219.85

Finding the Fourth Proportional to 257,947.11, 355,949.67 and 143,219.85

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Solution

The fourth proportional to 257,947.11, 355,949.67 and 143,219.85 is: 197,633.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,947.11 : 355,949.67 = 143,219.85 : x
  2. Step 2: Convert to fraction form
    257,947.11/355,949.67 = 143,219.85/x
  3. Step 3: Cross multiply
    257,947.11x = 355,949.67 × 143,219.85
  4. Step 4: Simplify right side
    257,947.11x = 50,979,058,344.95
  5. Step 5: Solve for x
    x = 50,979,058,344.95/257,947.11
  6. Step 6: Final answer
    x = 197,633.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.