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Finding the Fourth Proportional to 399,195.69, 550,885.19 and 227,113.22

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Solution

The fourth proportional to 399,195.69, 550,885.19 and 227,113.22 is: 313,413.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,195.69 : 550,885.19 = 227,113.22 : x
  2. Step 2: Convert to fraction form
    399,195.69/550,885.19 = 227,113.22/x
  3. Step 3: Cross multiply
    399,195.69x = 550,885.19 × 227,113.22
  4. Step 4: Simplify right side
    399,195.69x = 125,113,309,351.21
  5. Step 5: Solve for x
    x = 125,113,309,351.21/399,195.69
  6. Step 6: Final answer
    x = 313,413.48

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1.5x scale

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.