Home / 643,390.28-965,092.40-194,115.17

Finding the Fourth Proportional to 643,390.28, 965,092.40 and 194,115.17

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Solution

The fourth proportional to 643,390.28, 965,092.40 and 194,115.17 is: 291,174.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,390.28 : 965,092.40 = 194,115.17 : x
  2. Step 2: Convert to fraction form
    643,390.28/965,092.40 = 194,115.17/x
  3. Step 3: Cross multiply
    643,390.28x = 965,092.40 × 194,115.17
  4. Step 4: Simplify right side
    643,390.28x = 187,339,075,291.71
  5. Step 5: Solve for x
    x = 187,339,075,291.71/643,390.28
  6. Step 6: Final answer
    x = 291,174.86

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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.