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Finding the Fourth Proportional to 398,769.77, 550,280.39 and 226,663.80

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Solution

The fourth proportional to 398,769.77, 550,280.39 and 226,663.80 is: 312,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,769.77 : 550,280.39 = 226,663.80 : x
  2. Step 2: Convert to fraction form
    398,769.77/550,280.39 = 226,663.80/x
  3. Step 3: Cross multiply
    398,769.77x = 550,280.39 × 226,663.80
  4. Step 4: Simplify right side
    398,769.77x = 124,728,643,129.56
  5. Step 5: Solve for x
    x = 124,728,643,129.56/398,769.77
  6. Step 6: Final answer
    x = 312,783.60

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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.