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Finding the Fourth Proportional to 221,653.15, 332,528.34 and 71,908.58

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Solution

The fourth proportional to 221,653.15, 332,528.34 and 71,908.58 is: 107,878.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,653.15 : 332,528.34 = 71,908.58 : x
  2. Step 2: Convert to fraction form
    221,653.15/332,528.34 = 71,908.58/x
  3. Step 3: Cross multiply
    221,653.15x = 332,528.34 × 71,908.58
  4. Step 4: Simplify right side
    221,653.15x = 23,911,640,739.16
  5. Step 5: Solve for x
    x = 23,911,640,739.16/221,653.15
  6. Step 6: Final answer
    x = 107,878.64

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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.