Home / 643,440.40-965,136.33-194,149.28

Finding the Fourth Proportional to 643,440.40, 965,136.33 and 194,149.28

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Solution

The fourth proportional to 643,440.40, 965,136.33 and 194,149.28 is: 291,216.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,440.40 : 965,136.33 = 194,149.28 : x
  2. Step 2: Convert to fraction form
    643,440.40/965,136.33 = 194,149.28/x
  3. Step 3: Cross multiply
    643,440.40x = 965,136.33 × 194,149.28
  4. Step 4: Simplify right side
    643,440.40x = 187,380,525,984.18
  5. Step 5: Solve for x
    x = 187,380,525,984.18/643,440.40
  6. Step 6: Final answer
    x = 291,216.60

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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.