Home / 257,867.46-355,851.50-143,139.47

Finding the Fourth Proportional to 257,867.46, 355,851.50 and 143,139.47

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Solution

The fourth proportional to 257,867.46, 355,851.50 and 143,139.47 is: 197,529.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,867.46 : 355,851.50 = 143,139.47 : x
  2. Step 2: Convert to fraction form
    257,867.46/355,851.50 = 143,139.47/x
  3. Step 3: Cross multiply
    257,867.46x = 355,851.50 × 143,139.47
  4. Step 4: Simplify right side
    257,867.46x = 50,936,392,613.75
  5. Step 5: Solve for x
    x = 50,936,392,613.75/257,867.46
  6. Step 6: Final answer
    x = 197,529.35

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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.