Home / 458,273.60-687,134.24-205,508.40

Finding the Fourth Proportional to 458,273.60, 687,134.24 and 205,508.40

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Solution

The fourth proportional to 458,273.60, 687,134.24 and 205,508.40 is: 308,138.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,273.60 : 687,134.24 = 205,508.40 : x
  2. Step 2: Convert to fraction form
    458,273.60/687,134.24 = 205,508.40/x
  3. Step 3: Cross multiply
    458,273.60x = 687,134.24 × 205,508.40
  4. Step 4: Simplify right side
    458,273.60x = 141,211,858,247.62
  5. Step 5: Solve for x
    x = 141,211,858,247.62/458,273.60
  6. Step 6: Final answer
    x = 308,138.76

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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.