Home / 257,953.12-355,957.94-143,225.86

Finding the Fourth Proportional to 257,953.12, 355,957.94 and 143,225.86

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Solution

The fourth proportional to 257,953.12, 355,957.94 and 143,225.86 is: 197,642.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,953.12 : 355,957.94 = 143,225.86 : x
  2. Step 2: Convert to fraction form
    257,953.12/355,957.94 = 143,225.86/x
  3. Step 3: Cross multiply
    257,953.12x = 355,957.94 × 143,225.86
  4. Step 4: Simplify right side
    257,953.12x = 50,982,382,080.33
  5. Step 5: Solve for x
    x = 50,982,382,080.33/257,953.12
  6. Step 6: Final answer
    x = 197,642.04

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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.