Home / 257,708.45-386,556.91-89,218.60

Finding the Fourth Proportional to 257,708.45, 386,556.91 and 89,218.60

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Solution

The fourth proportional to 257,708.45, 386,556.91 and 89,218.60 is: 133,825.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,708.45 : 386,556.91 = 89,218.60 : x
  2. Step 2: Convert to fraction form
    257,708.45/386,556.91 = 89,218.60/x
  3. Step 3: Cross multiply
    257,708.45x = 386,556.91 × 89,218.60
  4. Step 4: Simplify right side
    257,708.45x = 34,488,065,141.09
  5. Step 5: Solve for x
    x = 34,488,065,141.09/257,708.45
  6. Step 6: Final answer
    x = 133,825.90

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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.