Home / 257,986.56-387,025.20-117,759.36

Finding the Fourth Proportional to 257,986.56, 387,025.20 and 117,759.36

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Solution

The fourth proportional to 257,986.56, 387,025.20 and 117,759.36 is: 176,659.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,986.56 : 387,025.20 = 117,759.36 : x
  2. Step 2: Convert to fraction form
    257,986.56/387,025.20 = 117,759.36/x
  3. Step 3: Cross multiply
    257,986.56x = 387,025.20 × 117,759.36
  4. Step 4: Simplify right side
    257,986.56x = 45,575,839,855.87
  5. Step 5: Solve for x
    x = 45,575,839,855.87/257,986.56
  6. Step 6: Final answer
    x = 176,659.74

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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.