Home / 221,086.19-331,699.38-78,928.41

Finding the Fourth Proportional to 221,086.19, 331,699.38 and 78,928.41

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Solution

The fourth proportional to 221,086.19, 331,699.38 and 78,928.41 is: 118,417.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,086.19 : 331,699.38 = 78,928.41 : x
  2. Step 2: Convert to fraction form
    221,086.19/331,699.38 = 78,928.41/x
  3. Step 3: Cross multiply
    221,086.19x = 331,699.38 × 78,928.41
  4. Step 4: Simplify right side
    221,086.19x = 26,180,504,661.39
  5. Step 5: Solve for x
    x = 26,180,504,661.39/221,086.19
  6. Step 6: Final answer
    x = 118,417.64

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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.