Home / 257,862.35-386,796.18-77,949.25

Finding the Fourth Proportional to 257,862.35, 386,796.18 and 77,949.25

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Solution

The fourth proportional to 257,862.35, 386,796.18 and 77,949.25 is: 116,924.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,862.35 : 386,796.18 = 77,949.25 : x
  2. Step 2: Convert to fraction form
    257,862.35/386,796.18 = 77,949.25/x
  3. Step 3: Cross multiply
    257,862.35x = 386,796.18 × 77,949.25
  4. Step 4: Simplify right side
    257,862.35x = 30,150,469,810.14
  5. Step 5: Solve for x
    x = 30,150,469,810.14/257,862.35
  6. Step 6: Final answer
    x = 116,924.67

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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.