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Finding the Fourth Proportional to 221,431.70, 332,115.15 and 63,643.70

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Solution

The fourth proportional to 221,431.70, 332,115.15 and 63,643.70 is: 95,456.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,431.70 : 332,115.15 = 63,643.70 : x
  2. Step 2: Convert to fraction form
    221,431.70/332,115.15 = 63,643.70/x
  3. Step 3: Cross multiply
    221,431.70x = 332,115.15 × 63,643.70
  4. Step 4: Simplify right side
    221,431.70x = 21,137,036,972.06
  5. Step 5: Solve for x
    x = 21,137,036,972.06/221,431.70
  6. Step 6: Final answer
    x = 95,456.24

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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.