Home / 257,839.70-355,813.26-143,111.66

Finding the Fourth Proportional to 257,839.70, 355,813.26 and 143,111.66

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Solution

The fourth proportional to 257,839.70, 355,813.26 and 143,111.66 is: 197,491.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,839.70 : 355,813.26 = 143,111.66 : x
  2. Step 2: Convert to fraction form
    257,839.70/355,813.26 = 143,111.66/x
  3. Step 3: Cross multiply
    257,839.70x = 355,813.26 × 143,111.66
  4. Step 4: Simplify right side
    257,839.70x = 50,921,026,288.61
  5. Step 5: Solve for x
    x = 50,921,026,288.61/257,839.70
  6. Step 6: Final answer
    x = 197,491.02

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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.