Home / 206,040.78-308,507.47-130,753.31

Finding the Fourth Proportional to 206,040.78, 308,507.47 and 130,753.31

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Solution

The fourth proportional to 206,040.78, 308,507.47 and 130,753.31 is: 195,778.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,040.78 : 308,507.47 = 130,753.31 : x
  2. Step 2: Convert to fraction form
    206,040.78/308,507.47 = 130,753.31/x
  3. Step 3: Cross multiply
    206,040.78x = 308,507.47 × 130,753.31
  4. Step 4: Simplify right side
    206,040.78x = 40,338,370,992.81
  5. Step 5: Solve for x
    x = 40,338,370,992.81/206,040.78
  6. Step 6: Final answer
    x = 195,778.58

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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.