Home / 257,839.13-355,811.33-143,111.85

Finding the Fourth Proportional to 257,839.13, 355,811.33 and 143,111.85

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Solution

The fourth proportional to 257,839.13, 355,811.33 and 143,111.85 is: 197,490.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,839.13 : 355,811.33 = 143,111.85 : x
  2. Step 2: Convert to fraction form
    257,839.13/355,811.33 = 143,111.85/x
  3. Step 3: Cross multiply
    257,839.13x = 355,811.33 × 143,111.85
  4. Step 4: Simplify right side
    257,839.13x = 50,920,816,710.75
  5. Step 5: Solve for x
    x = 50,920,816,710.75/257,839.13
  6. Step 6: Final answer
    x = 197,490.65

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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.