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Finding the Fourth Proportional to 398,618.10, 550,072.13 and 226,513.05

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Solution

The fourth proportional to 398,618.10, 550,072.13 and 226,513.05 is: 312,576.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,618.10 : 550,072.13 = 226,513.05 : x
  2. Step 2: Convert to fraction form
    398,618.10/550,072.13 = 226,513.05/x
  3. Step 3: Cross multiply
    398,618.10x = 550,072.13 × 226,513.05
  4. Step 4: Simplify right side
    398,618.10x = 124,598,515,886.30
  5. Step 5: Solve for x
    x = 124,598,515,886.30/398,618.10
  6. Step 6: Final answer
    x = 312,576.16

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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.