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Finding the Fourth Proportional to 198,040.40, 297,103.80 and 57,787.60

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Solution

The fourth proportional to 198,040.40, 297,103.80 and 57,787.60 is: 86,694.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,040.40 : 297,103.80 = 57,787.60 : x
  2. Step 2: Convert to fraction form
    198,040.40/297,103.80 = 57,787.60/x
  3. Step 3: Cross multiply
    198,040.40x = 297,103.80 × 57,787.60
  4. Step 4: Simplify right side
    198,040.40x = 17,168,915,552.88
  5. Step 5: Solve for x
    x = 17,168,915,552.88/198,040.40
  6. Step 6: Final answer
    x = 86,694.01

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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.