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Finding the Fourth Proportional to 404,145.80, 606,161.10 and 137,918.60

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Solution

The fourth proportional to 404,145.80, 606,161.10 and 137,918.60 is: 206,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,145.80 : 606,161.10 = 137,918.60 : x
  2. Step 2: Convert to fraction form
    404,145.80/606,161.10 = 137,918.60/x
  3. Step 3: Cross multiply
    404,145.80x = 606,161.10 × 137,918.60
  4. Step 4: Simplify right side
    404,145.80x = 83,600,890,286.46
  5. Step 5: Solve for x
    x = 83,600,890,286.46/404,145.80
  6. Step 6: Final answer
    x = 206,858.24

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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.