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Finding the Fourth Proportional to 221,455.10, 332,235.36 and 71,695.40

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Solution

The fourth proportional to 221,455.10, 332,235.36 and 71,695.40 is: 107,560.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,455.10 : 332,235.36 = 71,695.40 : x
  2. Step 2: Convert to fraction form
    221,455.10/332,235.36 = 71,695.40/x
  3. Step 3: Cross multiply
    221,455.10x = 332,235.36 × 71,695.40
  4. Step 4: Simplify right side
    221,455.10x = 23,819,747,029.34
  5. Step 5: Solve for x
    x = 23,819,747,029.34/221,455.10
  6. Step 6: Final answer
    x = 107,560.16

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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.