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Finding the Fourth Proportional to 198,772.80, 298,072.80 and 58,502.40

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Solution

The fourth proportional to 198,772.80, 298,072.80 and 58,502.40 is: 87,728.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,772.80 : 298,072.80 = 58,502.40 : x
  2. Step 2: Convert to fraction form
    198,772.80/298,072.80 = 58,502.40/x
  3. Step 3: Cross multiply
    198,772.80x = 298,072.80 × 58,502.40
  4. Step 4: Simplify right side
    198,772.80x = 17,437,974,174.72
  5. Step 5: Solve for x
    x = 17,437,974,174.72/198,772.80
  6. Step 6: Final answer
    x = 87,728.17

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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.