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Finding the Fourth Proportional to 398,093.70, 549,414.69 and 236,949.30

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Solution

The fourth proportional to 398,093.70, 549,414.69 and 236,949.30 is: 327,017.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,093.70 : 549,414.69 = 236,949.30 : x
  2. Step 2: Convert to fraction form
    398,093.70/549,414.69 = 236,949.30/x
  3. Step 3: Cross multiply
    398,093.70x = 549,414.69 × 236,949.30
  4. Step 4: Simplify right side
    398,093.70x = 130,183,426,205.22
  5. Step 5: Solve for x
    x = 130,183,426,205.22/398,093.70
  6. Step 6: Final answer
    x = 327,017.05

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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.