Home / 643,441.50-965,138.02-194,150.43

Finding the Fourth Proportional to 643,441.50, 965,138.02 and 194,150.43

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Solution

The fourth proportional to 643,441.50, 965,138.02 and 194,150.43 is: 291,218.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,441.50 : 965,138.02 = 194,150.43 : x
  2. Step 2: Convert to fraction form
    643,441.50/965,138.02 = 194,150.43/x
  3. Step 3: Cross multiply
    643,441.50x = 965,138.02 × 194,150.43
  4. Step 4: Simplify right side
    643,441.50x = 187,381,961,106.97
  5. Step 5: Solve for x
    x = 187,381,961,106.97/643,441.50
  6. Step 6: Final answer
    x = 291,218.33

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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.