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Finding the Fourth Proportional to 308,253.25, 462,379.88 and 86,637.25

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Solution

The fourth proportional to 308,253.25, 462,379.88 and 86,637.25 is: 129,955.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,253.25 : 462,379.88 = 86,637.25 : x
  2. Step 2: Convert to fraction form
    308,253.25/462,379.88 = 86,637.25/x
  3. Step 3: Cross multiply
    308,253.25x = 462,379.88 × 86,637.25
  4. Step 4: Simplify right side
    308,253.25x = 40,059,321,258.53
  5. Step 5: Solve for x
    x = 40,059,321,258.53/308,253.25
  6. Step 6: Final answer
    x = 129,955.88

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1.5x scale

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.