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Finding the Fourth Proportional to 225,989.48, 338,981.76 and 55,212.72

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Solution

The fourth proportional to 225,989.48, 338,981.76 and 55,212.72 is: 82,818.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,989.48 : 338,981.76 = 55,212.72 : x
  2. Step 2: Convert to fraction form
    225,989.48/338,981.76 = 55,212.72/x
  3. Step 3: Cross multiply
    225,989.48x = 338,981.76 × 55,212.72
  4. Step 4: Simplify right side
    225,989.48x = 18,716,104,999.99
  5. Step 5: Solve for x
    x = 18,716,104,999.99/225,989.48
  6. Step 6: Final answer
    x = 82,818.48

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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.