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Finding the Fourth Proportional to 198,480.80, 273,946.80 and 122,065.63

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Solution

The fourth proportional to 198,480.80, 273,946.80 and 122,065.63 is: 168,477.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,480.80 : 273,946.80 = 122,065.63 : x
  2. Step 2: Convert to fraction form
    198,480.80/273,946.80 = 122,065.63/x
  3. Step 3: Cross multiply
    198,480.80x = 273,946.80 × 122,065.63
  4. Step 4: Simplify right side
    198,480.80x = 33,439,489,528.66
  5. Step 5: Solve for x
    x = 33,439,489,528.66/198,480.80
  6. Step 6: Final answer
    x = 168,477.20

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1.5x scale

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.