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Finding the Fourth Proportional to 198,255, 273,410.40 and 130,245

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Solution

The fourth proportional to 198,255, 273,410.40 and 130,245 is: 179,618.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,255 : 273,410.40 = 130,245 : x
  2. Step 2: Convert to fraction form
    198,255/273,410.40 = 130,245/x
  3. Step 3: Cross multiply
    198,255x = 273,410.40 × 130,245
  4. Step 4: Simplify right side
    198,255x = 35,610,337,548
  5. Step 5: Solve for x
    x = 35,610,337,548/198,255
  6. Step 6: Final answer
    x = 179,618.86

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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.