Home / 257,976.65-355,995.80-143,262.57

Finding the Fourth Proportional to 257,976.65, 355,995.80 and 143,262.57

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Solution

The fourth proportional to 257,976.65, 355,995.80 and 143,262.57 is: 197,695.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,976.65 : 355,995.80 = 143,262.57 : x
  2. Step 2: Convert to fraction form
    257,976.65/355,995.80 = 143,262.57/x
  3. Step 3: Cross multiply
    257,976.65x = 355,995.80 × 143,262.57
  4. Step 4: Simplify right side
    257,976.65x = 51,000,873,217.21
  5. Step 5: Solve for x
    x = 51,000,873,217.21/257,976.65
  6. Step 6: Final answer
    x = 197,695.70

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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.