Home / 258,266.32-386,566.20-133,435.60

Finding the Fourth Proportional to 258,266.32, 386,566.20 and 133,435.60

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Solution

The fourth proportional to 258,266.32, 386,566.20 and 133,435.60 is: 199,722.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,266.32 : 386,566.20 = 133,435.60 : x
  2. Step 2: Convert to fraction form
    258,266.32/386,566.20 = 133,435.60/x
  3. Step 3: Cross multiply
    258,266.32x = 386,566.20 × 133,435.60
  4. Step 4: Simplify right side
    258,266.32x = 51,581,692,836.72
  5. Step 5: Solve for x
    x = 51,581,692,836.72/258,266.32
  6. Step 6: Final answer
    x = 199,722.88

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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.