Home / 257,493.20-355,344.89-142,776.68

Finding the Fourth Proportional to 257,493.20, 355,344.89 and 142,776.68

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Solution

The fourth proportional to 257,493.20, 355,344.89 and 142,776.68 is: 197,034.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,493.20 : 355,344.89 = 142,776.68 : x
  2. Step 2: Convert to fraction form
    257,493.20/355,344.89 = 142,776.68/x
  3. Step 3: Cross multiply
    257,493.20x = 355,344.89 × 142,776.68
  4. Step 4: Simplify right side
    257,493.20x = 50,734,962,935.28
  5. Step 5: Solve for x
    x = 50,734,962,935.28/257,493.20
  6. Step 6: Final answer
    x = 197,034.19

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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.