Home / 285,966.20-428,949.30-219,740.60

Finding the Fourth Proportional to 285,966.20, 428,949.30 and 219,740.60

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Solution

The fourth proportional to 285,966.20, 428,949.30 and 219,740.60 is: 329,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,966.20 : 428,949.30 = 219,740.60 : x
  2. Step 2: Convert to fraction form
    285,966.20/428,949.30 = 219,740.60/x
  3. Step 3: Cross multiply
    285,966.20x = 428,949.30 × 219,740.60
  4. Step 4: Simplify right side
    285,966.20x = 94,257,576,551.58
  5. Step 5: Solve for x
    x = 94,257,576,551.58/285,966.20
  6. Step 6: Final answer
    x = 329,610.90

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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.