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Finding the Fourth Proportional to 221,809.20, 332,130.60 and 162,322.80

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Solution

The fourth proportional to 221,809.20, 332,130.60 and 162,322.80 is: 243,057.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,809.20 : 332,130.60 = 162,322.80 : x
  2. Step 2: Convert to fraction form
    221,809.20/332,130.60 = 162,322.80/x
  3. Step 3: Cross multiply
    221,809.20x = 332,130.60 × 162,322.80
  4. Step 4: Simplify right side
    221,809.20x = 53,912,368,957.68
  5. Step 5: Solve for x
    x = 53,912,368,957.68/221,809.20
  6. Step 6: Final answer
    x = 243,057.41

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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.