Home / 399,219.12-550,903.04-227,120.88

Finding the Fourth Proportional to 399,219.12, 550,903.04 and 227,120.88

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Solution

The fourth proportional to 399,219.12, 550,903.04 and 227,120.88 is: 313,415.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,219.12 : 550,903.04 = 227,120.88 : x
  2. Step 2: Convert to fraction form
    399,219.12/550,903.04 = 227,120.88/x
  3. Step 3: Cross multiply
    399,219.12x = 550,903.04 × 227,120.88
  4. Step 4: Simplify right side
    399,219.12x = 125,121,583,239.48
  5. Step 5: Solve for x
    x = 125,121,583,239.48/399,219.12
  6. Step 6: Final answer
    x = 313,415.81

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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.