Home / 235,387.20-352,562.40-209,121.60

Finding the Fourth Proportional to 235,387.20, 352,562.40 and 209,121.60

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Solution

The fourth proportional to 235,387.20, 352,562.40 and 209,121.60 is: 313,221.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,387.20 : 352,562.40 = 209,121.60 : x
  2. Step 2: Convert to fraction form
    235,387.20/352,562.40 = 209,121.60/x
  3. Step 3: Cross multiply
    235,387.20x = 352,562.40 × 209,121.60
  4. Step 4: Simplify right side
    235,387.20x = 73,728,413,187.84
  5. Step 5: Solve for x
    x = 73,728,413,187.84/235,387.20
  6. Step 6: Final answer
    x = 313,221.85

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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.