Home / 257,255.06-386,119.79-130,986.34

Finding the Fourth Proportional to 257,255.06, 386,119.79 and 130,986.34

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Solution

The fourth proportional to 257,255.06, 386,119.79 and 130,986.34 is: 196,600.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,255.06 : 386,119.79 = 130,986.34 : x
  2. Step 2: Convert to fraction form
    257,255.06/386,119.79 = 130,986.34/x
  3. Step 3: Cross multiply
    257,255.06x = 386,119.79 × 130,986.34
  4. Step 4: Simplify right side
    257,255.06x = 50,576,417,682.20
  5. Step 5: Solve for x
    x = 50,576,417,682.20/257,255.06
  6. Step 6: Final answer
    x = 196,600.28

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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.