Home / 221,719.60-332,579.40-128,177.20

Finding the Fourth Proportional to 221,719.60, 332,579.40 and 128,177.20

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Solution

The fourth proportional to 221,719.60, 332,579.40 and 128,177.20 is: 192,265.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,719.60 : 332,579.40 = 128,177.20 : x
  2. Step 2: Convert to fraction form
    221,719.60/332,579.40 = 128,177.20/x
  3. Step 3: Cross multiply
    221,719.60x = 332,579.40 × 128,177.20
  4. Step 4: Simplify right side
    221,719.60x = 42,629,096,269.68
  5. Step 5: Solve for x
    x = 42,629,096,269.68/221,719.60
  6. Step 6: Final answer
    x = 192,265.80

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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.