Home / 257,857.24-386,627.06-89,338.36

Finding the Fourth Proportional to 257,857.24, 386,627.06 and 89,338.36

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Solution

The fourth proportional to 257,857.24, 386,627.06 and 89,338.36 is: 133,952.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,857.24 : 386,627.06 = 89,338.36 : x
  2. Step 2: Convert to fraction form
    257,857.24/386,627.06 = 89,338.36/x
  3. Step 3: Cross multiply
    257,857.24x = 386,627.06 × 89,338.36
  4. Step 4: Simplify right side
    257,857.24x = 34,540,627,472.02
  5. Step 5: Solve for x
    x = 34,540,627,472.02/257,857.24
  6. Step 6: Final answer
    x = 133,952.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.