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Finding the Fourth Proportional to 398,646.97, 549,685.91 and 325,823.85

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Solution

The fourth proportional to 398,646.97, 549,685.91 and 325,823.85 is: 449,271.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,646.97 : 549,685.91 = 325,823.85 : x
  2. Step 2: Convert to fraction form
    398,646.97/549,685.91 = 325,823.85/x
  3. Step 3: Cross multiply
    398,646.97x = 549,685.91 × 325,823.85
  4. Step 4: Simplify right side
    398,646.97x = 179,100,780,301.51
  5. Step 5: Solve for x
    x = 179,100,780,301.51/398,646.97
  6. Step 6: Final answer
    x = 449,271.65

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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.