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Finding the Fourth Proportional to 643,858.62, 965,806.25 and 170,544.03

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Solution

The fourth proportional to 643,858.62, 965,806.25 and 170,544.03 is: 255,820.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,858.62 : 965,806.25 = 170,544.03 : x
  2. Step 2: Convert to fraction form
    643,858.62/965,806.25 = 170,544.03/x
  3. Step 3: Cross multiply
    643,858.62x = 965,806.25 × 170,544.03
  4. Step 4: Simplify right side
    643,858.62x = 164,712,489,221.47
  5. Step 5: Solve for x
    x = 164,712,489,221.47/643,858.62
  6. Step 6: Final answer
    x = 255,820.90

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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.