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Finding the Fourth Proportional to 220,629.80, 330,944.70 and 161,877.80

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Solution

The fourth proportional to 220,629.80, 330,944.70 and 161,877.80 is: 242,816.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,629.80 : 330,944.70 = 161,877.80 : x
  2. Step 2: Convert to fraction form
    220,629.80/330,944.70 = 161,877.80/x
  3. Step 3: Cross multiply
    220,629.80x = 330,944.70 × 161,877.80
  4. Step 4: Simplify right side
    220,629.80x = 53,572,599,957.66
  5. Step 5: Solve for x
    x = 53,572,599,957.66/220,629.80
  6. Step 6: Final answer
    x = 242,816.70

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1.5x scale

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.