Home / 221,217.12-331,828.80-55,005.12

Finding the Fourth Proportional to 221,217.12, 331,828.80 and 55,005.12

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Solution

The fourth proportional to 221,217.12, 331,828.80 and 55,005.12 is: 82,508.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,217.12 : 331,828.80 = 55,005.12 : x
  2. Step 2: Convert to fraction form
    221,217.12/331,828.80 = 55,005.12/x
  3. Step 3: Cross multiply
    221,217.12x = 331,828.80 × 55,005.12
  4. Step 4: Simplify right side
    221,217.12x = 18,252,282,963.46
  5. Step 5: Solve for x
    x = 18,252,282,963.46/221,217.12
  6. Step 6: Final answer
    x = 82,508.46

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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.