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Finding the Fourth Proportional to 203,571.80, 280,930.78 and 112,933.70

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Solution

The fourth proportional to 203,571.80, 280,930.78 and 112,933.70 is: 155,849.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,571.80 : 280,930.78 = 112,933.70 : x
  2. Step 2: Convert to fraction form
    203,571.80/280,930.78 = 112,933.70/x
  3. Step 3: Cross multiply
    203,571.80x = 280,930.78 × 112,933.70
  4. Step 4: Simplify right side
    203,571.80x = 31,726,552,429.29
  5. Step 5: Solve for x
    x = 31,726,552,429.29/203,571.80
  6. Step 6: Final answer
    x = 155,849.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.