Home / 308,766.90-462,908.40-121,918.26

Finding the Fourth Proportional to 308,766.90, 462,908.40 and 121,918.26

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Solution

The fourth proportional to 308,766.90, 462,908.40 and 121,918.26 is: 182,781.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,766.90 : 462,908.40 = 121,918.26 : x
  2. Step 2: Convert to fraction form
    308,766.90/462,908.40 = 121,918.26/x
  3. Step 3: Cross multiply
    308,766.90x = 462,908.40 × 121,918.26
  4. Step 4: Simplify right side
    308,766.90x = 56,436,986,667.38
  5. Step 5: Solve for x
    x = 56,436,986,667.38/308,766.90
  6. Step 6: Final answer
    x = 182,781.85

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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.