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Finding the Fourth Proportional to 221,300.40, 332,047.80 and 102,910.80

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Solution

The fourth proportional to 221,300.40, 332,047.80 and 102,910.80 is: 154,411.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,300.40 : 332,047.80 = 102,910.80 : x
  2. Step 2: Convert to fraction form
    221,300.40/332,047.80 = 102,910.80/x
  3. Step 3: Cross multiply
    221,300.40x = 332,047.80 × 102,910.80
  4. Step 4: Simplify right side
    221,300.40x = 34,171,304,736.24
  5. Step 5: Solve for x
    x = 34,171,304,736.24/221,300.40
  6. Step 6: Final answer
    x = 154,411.40

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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.