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Finding the Fourth Proportional to 308,326.98, 462,490.68 and 83,687.46

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Solution

The fourth proportional to 308,326.98, 462,490.68 and 83,687.46 is: 125,531.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,326.98 : 462,490.68 = 83,687.46 : x
  2. Step 2: Convert to fraction form
    308,326.98/462,490.68 = 83,687.46/x
  3. Step 3: Cross multiply
    308,326.98x = 462,490.68 × 83,687.46
  4. Step 4: Simplify right side
    308,326.98x = 38,704,670,282.87
  5. Step 5: Solve for x
    x = 38,704,670,282.87/308,326.98
  6. Step 6: Final answer
    x = 125,531.25

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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.