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Finding the Fourth Proportional to 198,440.78, 297,702.16 and 65,329.04

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Solution

The fourth proportional to 198,440.78, 297,702.16 and 65,329.04 is: 98,007.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,440.78 : 297,702.16 = 65,329.04 : x
  2. Step 2: Convert to fraction form
    198,440.78/297,702.16 = 65,329.04/x
  3. Step 3: Cross multiply
    198,440.78x = 297,702.16 × 65,329.04
  4. Step 4: Simplify right side
    198,440.78x = 19,448,596,318.73
  5. Step 5: Solve for x
    x = 19,448,596,318.73/198,440.78
  6. Step 6: Final answer
    x = 98,007.05

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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.