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Finding the Fourth Proportional to 198,469.44, 273,840.48 and 112,430.40

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Solution

The fourth proportional to 198,469.44, 273,840.48 and 112,430.40 is: 155,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,469.44 : 273,840.48 = 112,430.40 : x
  2. Step 2: Convert to fraction form
    198,469.44/273,840.48 = 112,430.40/x
  3. Step 3: Cross multiply
    198,469.44x = 273,840.48 × 112,430.40
  4. Step 4: Simplify right side
    198,469.44x = 30,787,994,702.59
  5. Step 5: Solve for x
    x = 30,787,994,702.59/198,469.44
  6. Step 6: Final answer
    x = 155,127.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.