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Finding the Fourth Proportional to 221,446.70, 332,170.05 and 212,698.70

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Solution

The fourth proportional to 221,446.70, 332,170.05 and 212,698.70 is: 319,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,446.70 : 332,170.05 = 212,698.70 : x
  2. Step 2: Convert to fraction form
    221,446.70/332,170.05 = 212,698.70/x
  3. Step 3: Cross multiply
    221,446.70x = 332,170.05 × 212,698.70
  4. Step 4: Simplify right side
    221,446.70x = 70,652,137,813.94
  5. Step 5: Solve for x
    x = 70,652,137,813.94/221,446.70
  6. Step 6: Final answer
    x = 319,048.05

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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.