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Finding the Fourth Proportional to 221,398.05, 332,072.46 and 79,237.58

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Solution

The fourth proportional to 221,398.05, 332,072.46 and 79,237.58 is: 118,847.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,398.05 : 332,072.46 = 79,237.58 : x
  2. Step 2: Convert to fraction form
    221,398.05/332,072.46 = 79,237.58/x
  3. Step 3: Cross multiply
    221,398.05x = 332,072.46 × 79,237.58
  4. Step 4: Simplify right side
    221,398.05x = 26,312,616,454.68
  5. Step 5: Solve for x
    x = 26,312,616,454.68/221,398.05
  6. Step 6: Final answer
    x = 118,847.55

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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.