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Finding the Fourth Proportional to 404,246.60, 606,369.90 and 137,918.60

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Solution

The fourth proportional to 404,246.60, 606,369.90 and 137,918.60 is: 206,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,246.60 : 606,369.90 = 137,918.60 : x
  2. Step 2: Convert to fraction form
    404,246.60/606,369.90 = 137,918.60/x
  3. Step 3: Cross multiply
    404,246.60x = 606,369.90 × 137,918.60
  4. Step 4: Simplify right side
    404,246.60x = 83,629,687,690.14
  5. Step 5: Solve for x
    x = 83,629,687,690.14/404,246.60
  6. Step 6: Final answer
    x = 206,877.90

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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.