Home / 204,425.20-306,688.84-71,307.40

Finding the Fourth Proportional to 204,425.20, 306,688.84 and 71,307.40

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Solution

The fourth proportional to 204,425.20, 306,688.84 and 71,307.40 is: 106,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,425.20 : 306,688.84 = 71,307.40 : x
  2. Step 2: Convert to fraction form
    204,425.20/306,688.84 = 71,307.40/x
  3. Step 3: Cross multiply
    204,425.20x = 306,688.84 × 71,307.40
  4. Step 4: Simplify right side
    204,425.20x = 21,869,183,789.42
  5. Step 5: Solve for x
    x = 21,869,183,789.42/204,425.20
  6. Step 6: Final answer
    x = 106,978.90

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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.