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Finding the Fourth Proportional to 398,664.33, 550,203.45 and 226,608.18

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Solution

The fourth proportional to 398,664.33, 550,203.45 and 226,608.18 is: 312,745.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,664.33 : 550,203.45 = 226,608.18 : x
  2. Step 2: Convert to fraction form
    398,664.33/550,203.45 = 226,608.18/x
  3. Step 3: Cross multiply
    398,664.33x = 550,203.45 × 226,608.18
  4. Step 4: Simplify right side
    398,664.33x = 124,680,602,434.22
  5. Step 5: Solve for x
    x = 124,680,602,434.22/398,664.33
  6. Step 6: Final answer
    x = 312,745.82

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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.