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Finding the Fourth Proportional to 399,077.07, 550,738.50 and 227,019.96

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Solution

The fourth proportional to 399,077.07, 550,738.50 and 227,019.96 is: 313,294.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,077.07 : 550,738.50 = 227,019.96 : x
  2. Step 2: Convert to fraction form
    399,077.07/550,738.50 = 227,019.96/x
  3. Step 3: Cross multiply
    399,077.07x = 550,738.50 × 227,019.96
  4. Step 4: Simplify right side
    399,077.07x = 125,028,632,240.46
  5. Step 5: Solve for x
    x = 125,028,632,240.46/399,077.07
  6. Step 6: Final answer
    x = 313,294.45

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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.