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Finding the Fourth Proportional to 203,032.80, 304,568.40 and 55,288.80

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Solution

The fourth proportional to 203,032.80, 304,568.40 and 55,288.80 is: 82,938.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,032.80 : 304,568.40 = 55,288.80 : x
  2. Step 2: Convert to fraction form
    203,032.80/304,568.40 = 55,288.80/x
  3. Step 3: Cross multiply
    203,032.80x = 304,568.40 × 55,288.80
  4. Step 4: Simplify right side
    203,032.80x = 16,839,221,353.92
  5. Step 5: Solve for x
    x = 16,839,221,353.92/203,032.80
  6. Step 6: Final answer
    x = 82,938.43

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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.