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Finding the Fourth Proportional to 400,458.86, 552,640.50 and 228,396.62

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Solution

The fourth proportional to 400,458.86, 552,640.50 and 228,396.62 is: 315,191.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,458.86 : 552,640.50 = 228,396.62 : x
  2. Step 2: Convert to fraction form
    400,458.86/552,640.50 = 228,396.62/x
  3. Step 3: Cross multiply
    400,458.86x = 552,640.50 × 228,396.62
  4. Step 4: Simplify right side
    400,458.86x = 126,221,222,275.11
  5. Step 5: Solve for x
    x = 126,221,222,275.11/400,458.86
  6. Step 6: Final answer
    x = 315,191.48

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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.