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Finding the Fourth Proportional to 257,542.84, 386,257.92 and 131,048.92

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Solution

The fourth proportional to 257,542.84, 386,257.92 and 131,048.92 is: 196,544.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,542.84 : 386,257.92 = 131,048.92 : x
  2. Step 2: Convert to fraction form
    257,542.84/386,257.92 = 131,048.92/x
  3. Step 3: Cross multiply
    257,542.84x = 386,257.92 × 131,048.92
  4. Step 4: Simplify right side
    257,542.84x = 50,618,683,257.45
  5. Step 5: Solve for x
    x = 50,618,683,257.45/257,542.84
  6. Step 6: Final answer
    x = 196,544.71

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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.