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Finding the Fourth Proportional to 220,788.80, 331,226.40 and 94,428.80

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Solution

The fourth proportional to 220,788.80, 331,226.40 and 94,428.80 is: 141,661.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,788.80 : 331,226.40 = 94,428.80 : x
  2. Step 2: Convert to fraction form
    220,788.80/331,226.40 = 94,428.80/x
  3. Step 3: Cross multiply
    220,788.80x = 331,226.40 × 94,428.80
  4. Step 4: Simplify right side
    220,788.80x = 31,277,311,480.32
  5. Step 5: Solve for x
    x = 31,277,311,480.32/220,788.80
  6. Step 6: Final answer
    x = 141,661.68

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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.