Home / 400,816.86-553,121.68-228,789.37

Finding the Fourth Proportional to 400,816.86, 553,121.68 and 228,789.37

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Solution

The fourth proportional to 400,816.86, 553,121.68 and 228,789.37 is: 315,726.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,816.86 : 553,121.68 = 228,789.37 : x
  2. Step 2: Convert to fraction form
    400,816.86/553,121.68 = 228,789.37/x
  3. Step 3: Cross multiply
    400,816.86x = 553,121.68 × 228,789.37
  4. Step 4: Simplify right side
    400,816.86x = 126,548,360,700.54
  5. Step 5: Solve for x
    x = 126,548,360,700.54/400,816.86
  6. Step 6: Final answer
    x = 315,726.14

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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.