Home / 307,321.80-423,946.00-205,314.65

Finding the Fourth Proportional to 307,321.80, 423,946.00 and 205,314.65

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Solution

The fourth proportional to 307,321.80, 423,946.00 and 205,314.65 is: 283,228.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,321.80 : 423,946.00 = 205,314.65 : x
  2. Step 2: Convert to fraction form
    307,321.80/423,946.00 = 205,314.65/x
  3. Step 3: Cross multiply
    307,321.80x = 423,946.00 × 205,314.65
  4. Step 4: Simplify right side
    307,321.80x = 87,042,324,335.61
  5. Step 5: Solve for x
    x = 87,042,324,335.61/307,321.80
  6. Step 6: Final answer
    x = 283,228.61

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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.