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Finding the Fourth Proportional to 308,266, 462,399 and 86,650

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Solution

The fourth proportional to 308,266, 462,399 and 86,650 is: 129,975

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,266 : 462,399 = 86,650 : x
  2. Step 2: Convert to fraction form
    308,266/462,399 = 86,650/x
  3. Step 3: Cross multiply
    308,266x = 462,399 × 86,650
  4. Step 4: Simplify right side
    308,266x = 40,066,873,350
  5. Step 5: Solve for x
    x = 40,066,873,350/308,266
  6. Step 6: Final answer
    x = 129,975

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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.