Home / 235,431.20-352,628.40-209,165.60

Finding the Fourth Proportional to 235,431.20, 352,628.40 and 209,165.60

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Solution

The fourth proportional to 235,431.20, 352,628.40 and 209,165.60 is: 313,287.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,431.20 : 352,628.40 = 209,165.60 : x
  2. Step 2: Convert to fraction form
    235,431.20/352,628.40 = 209,165.60/x
  3. Step 3: Cross multiply
    235,431.20x = 352,628.40 × 209,165.60
  4. Step 4: Simplify right side
    235,431.20x = 73,757,730,863.04
  5. Step 5: Solve for x
    x = 73,757,730,863.04/235,431.20
  6. Step 6: Final answer
    x = 313,287.83

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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.