Home / 259,330.92-388,996.44-81,851.76

Finding the Fourth Proportional to 259,330.92, 388,996.44 and 81,851.76

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Solution

The fourth proportional to 259,330.92, 388,996.44 and 81,851.76 is: 122,777.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,330.92 : 388,996.44 = 81,851.76 : x
  2. Step 2: Convert to fraction form
    259,330.92/388,996.44 = 81,851.76/x
  3. Step 3: Cross multiply
    259,330.92x = 388,996.44 × 81,851.76
  4. Step 4: Simplify right side
    259,330.92x = 31,840,043,247.73
  5. Step 5: Solve for x
    x = 31,840,043,247.73/259,330.92
  6. Step 6: Final answer
    x = 122,777.66

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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.