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Finding the Fourth Proportional to 225,821.86, 311,611.71 and 130,359.31

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Solution

The fourth proportional to 225,821.86, 311,611.71 and 130,359.31 is: 179,882.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,821.86 : 311,611.71 = 130,359.31 : x
  2. Step 2: Convert to fraction form
    225,821.86/311,611.71 = 130,359.31/x
  3. Step 3: Cross multiply
    225,821.86x = 311,611.71 × 130,359.31
  4. Step 4: Simplify right side
    225,821.86x = 40,621,487,503.52
  5. Step 5: Solve for x
    x = 40,621,487,503.52/225,821.86
  6. Step 6: Final answer
    x = 179,882.88

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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.