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Finding the Fourth Proportional to 398,767.05, 550,276.65 and 226,661.10

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Solution

The fourth proportional to 398,767.05, 550,276.65 and 226,661.10 is: 312,779.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,767.05 : 550,276.65 = 226,661.10 : x
  2. Step 2: Convert to fraction form
    398,767.05/550,276.65 = 226,661.10/x
  3. Step 3: Cross multiply
    398,767.05x = 550,276.65 × 226,661.10
  4. Step 4: Simplify right side
    398,767.05x = 124,726,310,793.32
  5. Step 5: Solve for x
    x = 124,726,310,793.32/398,767.05
  6. Step 6: Final answer
    x = 312,779.88

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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.