Home / 643,441.40-965,137.83-194,150.28

Finding the Fourth Proportional to 643,441.40, 965,137.83 and 194,150.28

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Solution

The fourth proportional to 643,441.40, 965,137.83 and 194,150.28 is: 291,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,441.40 : 965,137.83 = 194,150.28 : x
  2. Step 2: Convert to fraction form
    643,441.40/965,137.83 = 194,150.28/x
  3. Step 3: Cross multiply
    643,441.40x = 965,137.83 × 194,150.28
  4. Step 4: Simplify right side
    643,441.40x = 187,381,779,933.09
  5. Step 5: Solve for x
    x = 187,381,779,933.09/643,441.40
  6. Step 6: Final answer
    x = 291,218.10

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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.