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Finding the Fourth Proportional to 398,680.66, 549,732.37 and 325,857.61

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Solution

The fourth proportional to 398,680.66, 549,732.37 and 325,857.61 is: 449,318.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,680.66 : 549,732.37 = 325,857.61 : x
  2. Step 2: Convert to fraction form
    398,680.66/549,732.37 = 325,857.61/x
  3. Step 3: Cross multiply
    398,680.66x = 549,732.37 × 325,857.61
  4. Step 4: Simplify right side
    398,680.66x = 179,134,472,664.53
  5. Step 5: Solve for x
    x = 179,134,472,664.53/398,680.66
  6. Step 6: Final answer
    x = 449,318.20

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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.