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Finding the Fourth Proportional to 259,940.40, 389,910.60 and 242,833.20

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Solution

The fourth proportional to 259,940.40, 389,910.60 and 242,833.20 is: 364,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,940.40 : 389,910.60 = 242,833.20 : x
  2. Step 2: Convert to fraction form
    259,940.40/389,910.60 = 242,833.20/x
  3. Step 3: Cross multiply
    259,940.40x = 389,910.60 × 242,833.20
  4. Step 4: Simplify right side
    259,940.40x = 94,683,238,711.92
  5. Step 5: Solve for x
    x = 94,683,238,711.92/259,940.40
  6. Step 6: Final answer
    x = 364,249.80

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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.