Home / 389,530.20-584,295.30-221,568.60

Finding the Fourth Proportional to 389,530.20, 584,295.30 and 221,568.60

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Solution

The fourth proportional to 389,530.20, 584,295.30 and 221,568.60 is: 332,352.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,530.20 : 584,295.30 = 221,568.60 : x
  2. Step 2: Convert to fraction form
    389,530.20/584,295.30 = 221,568.60/x
  3. Step 3: Cross multiply
    389,530.20x = 584,295.30 × 221,568.60
  4. Step 4: Simplify right side
    389,530.20x = 129,461,491,607.58
  5. Step 5: Solve for x
    x = 129,461,491,607.58/389,530.20
  6. Step 6: Final answer
    x = 332,352.90

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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.