Home / 252,991.06-379,836.51-128,419.54

Finding the Fourth Proportional to 252,991.06, 379,836.51 and 128,419.54

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Solution

The fourth proportional to 252,991.06, 379,836.51 and 128,419.54 is: 192,806.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,991.06 : 379,836.51 = 128,419.54 : x
  2. Step 2: Convert to fraction form
    252,991.06/379,836.51 = 128,419.54/x
  3. Step 3: Cross multiply
    252,991.06x = 379,836.51 × 128,419.54
  4. Step 4: Simplify right side
    252,991.06x = 48,778,429,889.41
  5. Step 5: Solve for x
    x = 48,778,429,889.41/252,991.06
  6. Step 6: Final answer
    x = 192,806.93

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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.