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Finding the Fourth Proportional to 398,682.66, 549,735.13 and 325,859.61

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Solution

The fourth proportional to 398,682.66, 549,735.13 and 325,859.61 is: 449,320.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,682.66 : 549,735.13 = 325,859.61 : x
  2. Step 2: Convert to fraction form
    398,682.66/549,735.13 = 325,859.61/x
  3. Step 3: Cross multiply
    398,682.66x = 549,735.13 × 325,859.61
  4. Step 4: Simplify right side
    398,682.66x = 179,136,475,065.10
  5. Step 5: Solve for x
    x = 179,136,475,065.10/398,682.66
  6. Step 6: Final answer
    x = 449,320.96

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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.