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Finding the Fourth Proportional to 221,106.80, 331,465.80 and 132,395.60

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Solution

The fourth proportional to 221,106.80, 331,465.80 and 132,395.60 is: 198,477.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,106.80 : 331,465.80 = 132,395.60 : x
  2. Step 2: Convert to fraction form
    221,106.80/331,465.80 = 132,395.60/x
  3. Step 3: Cross multiply
    221,106.80x = 331,465.80 × 132,395.60
  4. Step 4: Simplify right side
    221,106.80x = 43,884,613,470.48
  5. Step 5: Solve for x
    x = 43,884,613,470.48/221,106.80
  6. Step 6: Final answer
    x = 198,477.00

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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.