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Finding the Fourth Proportional to 221,643.44, 332,511.87 and 71,872.06

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Solution

The fourth proportional to 221,643.44, 332,511.87 and 71,872.06 is: 107,823.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,643.44 : 332,511.87 = 71,872.06 : x
  2. Step 2: Convert to fraction form
    221,643.44/332,511.87 = 71,872.06/x
  3. Step 3: Cross multiply
    221,643.44x = 332,511.87 × 71,872.06
  4. Step 4: Simplify right side
    221,643.44x = 23,898,313,071.35
  5. Step 5: Solve for x
    x = 23,898,313,071.35/221,643.44
  6. Step 6: Final answer
    x = 107,823.24

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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.