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Finding the Fourth Proportional to 221,403.60, 332,105.40 and 154,918.80

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Solution

The fourth proportional to 221,403.60, 332,105.40 and 154,918.80 is: 232,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,403.60 : 332,105.40 = 154,918.80 : x
  2. Step 2: Convert to fraction form
    221,403.60/332,105.40 = 154,918.80/x
  3. Step 3: Cross multiply
    221,403.60x = 332,105.40 × 154,918.80
  4. Step 4: Simplify right side
    221,403.60x = 51,449,370,041.52
  5. Step 5: Solve for x
    x = 51,449,370,041.52/221,403.60
  6. Step 6: Final answer
    x = 232,378.20

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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.