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Finding the Fourth Proportional to 398,873.46, 550,648.53 and 308,025.48

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Solution

The fourth proportional to 398,873.46, 550,648.53 and 308,025.48 is: 425,232.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,873.46 : 550,648.53 = 308,025.48 : x
  2. Step 2: Convert to fraction form
    398,873.46/550,648.53 = 308,025.48/x
  3. Step 3: Cross multiply
    398,873.46x = 550,648.53 × 308,025.48
  4. Step 4: Simplify right side
    398,873.46x = 169,613,777,764.54
  5. Step 5: Solve for x
    x = 169,613,777,764.54/398,873.46
  6. Step 6: Final answer
    x = 425,232.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.