Home / 811,061.06-1,216,660.79-212,021.26

Finding the Fourth Proportional to 811,061.06, 1,216,660.79 and 212,021.26

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Solution

The fourth proportional to 811,061.06, 1,216,660.79 and 212,021.26 is: 318,049.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,061.06 : 1,216,660.79 = 212,021.26 : x
  2. Step 2: Convert to fraction form
    811,061.06/1,216,660.79 = 212,021.26/x
  3. Step 3: Cross multiply
    811,061.06x = 1,216,660.79 × 212,021.26
  4. Step 4: Simplify right side
    811,061.06x = 257,957,953,688.40
  5. Step 5: Solve for x
    x = 257,957,953,688.40/811,061.06
  6. Step 6: Final answer
    x = 318,049.98

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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.