Home / 408,110.27-612,228.78-208,322.55

Finding the Fourth Proportional to 408,110.27, 612,228.78 and 208,322.55

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Solution

The fourth proportional to 408,110.27, 612,228.78 and 208,322.55 is: 312,516.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,110.27 : 612,228.78 = 208,322.55 : x
  2. Step 2: Convert to fraction form
    408,110.27/612,228.78 = 208,322.55/x
  3. Step 3: Cross multiply
    408,110.27x = 612,228.78 × 208,322.55
  4. Step 4: Simplify right side
    408,110.27x = 127,541,060,632.99
  5. Step 5: Solve for x
    x = 127,541,060,632.99/408,110.27
  6. Step 6: Final answer
    x = 312,516.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.