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Finding the Fourth Proportional to 308,817.80, 426,164.15 and 170,983.52

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Solution

The fourth proportional to 308,817.80, 426,164.15 and 170,983.52 is: 235,954.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,817.80 : 426,164.15 = 170,983.52 : x
  2. Step 2: Convert to fraction form
    308,817.80/426,164.15 = 170,983.52/x
  3. Step 3: Cross multiply
    308,817.80x = 426,164.15 × 170,983.52
  4. Step 4: Simplify right side
    308,817.80x = 72,867,046,596.37
  5. Step 5: Solve for x
    x = 72,867,046,596.37/308,817.80
  6. Step 6: Final answer
    x = 235,954.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.