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Finding the Fourth Proportional to 398,616.37, 550,115.10 and 228,876.01

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Solution

The fourth proportional to 398,616.37, 550,115.10 and 228,876.01 is: 315,862.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,616.37 : 550,115.10 = 228,876.01 : x
  2. Step 2: Convert to fraction form
    398,616.37/550,115.10 = 228,876.01/x
  3. Step 3: Cross multiply
    398,616.37x = 550,115.10 × 228,876.01
  4. Step 4: Simplify right side
    398,616.37x = 125,908,149,128.75
  5. Step 5: Solve for x
    x = 125,908,149,128.75/398,616.37
  6. Step 6: Final answer
    x = 315,862.97

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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.