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Finding the Fourth Proportional to 399,089.74, 550,756.70 and 227,003.26

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Solution

The fourth proportional to 399,089.74, 550,756.70 and 227,003.26 is: 313,271.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,089.74 : 550,756.70 = 227,003.26 : x
  2. Step 2: Convert to fraction form
    399,089.74/550,756.70 = 227,003.26/x
  3. Step 3: Cross multiply
    399,089.74x = 550,756.70 × 227,003.26
  4. Step 4: Simplify right side
    399,089.74x = 125,023,562,478.04
  5. Step 5: Solve for x
    x = 125,023,562,478.04/399,089.74
  6. Step 6: Final answer
    x = 313,271.81

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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.