Home / 811,060.56-1,216,660.04-212,020.75

Finding the Fourth Proportional to 811,060.56, 1,216,660.04 and 212,020.75

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Solution

The fourth proportional to 811,060.56, 1,216,660.04 and 212,020.75 is: 318,049.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,060.56 : 1,216,660.04 = 212,020.75 : x
  2. Step 2: Convert to fraction form
    811,060.56/1,216,660.04 = 212,020.75/x
  3. Step 3: Cross multiply
    811,060.56x = 1,216,660.04 × 212,020.75
  4. Step 4: Simplify right side
    811,060.56x = 257,957,174,175.83
  5. Step 5: Solve for x
    x = 257,957,174,175.83/811,060.56
  6. Step 6: Final answer
    x = 318,049.21

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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.