Home / 388,921.80-582,726.60-188,811.30

Finding the Fourth Proportional to 388,921.80, 582,726.60 and 188,811.30

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Solution

The fourth proportional to 388,921.80, 582,726.60 and 188,811.30 is: 282,898.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,921.80 : 582,726.60 = 188,811.30 : x
  2. Step 2: Convert to fraction form
    388,921.80/582,726.60 = 188,811.30/x
  3. Step 3: Cross multiply
    388,921.80x = 582,726.60 × 188,811.30
  4. Step 4: Simplify right side
    388,921.80x = 110,025,366,890.58
  5. Step 5: Solve for x
    x = 110,025,366,890.58/388,921.80
  6. Step 6: Final answer
    x = 282,898.43

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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.