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Finding the Fourth Proportional to 221,605.60, 332,408.40 and 218,106.40

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Solution

The fourth proportional to 221,605.60, 332,408.40 and 218,106.40 is: 327,159.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,605.60 : 332,408.40 = 218,106.40 : x
  2. Step 2: Convert to fraction form
    221,605.60/332,408.40 = 218,106.40/x
  3. Step 3: Cross multiply
    221,605.60x = 332,408.40 × 218,106.40
  4. Step 4: Simplify right side
    221,605.60x = 72,500,399,453.76
  5. Step 5: Solve for x
    x = 72,500,399,453.76/221,605.60
  6. Step 6: Final answer
    x = 327,159.60

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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.