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Finding the Fourth Proportional to 208,023.80, 311,517.30 and 166,551.80

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Solution

The fourth proportional to 208,023.80, 311,517.30 and 166,551.80 is: 249,412.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,023.80 : 311,517.30 = 166,551.80 : x
  2. Step 2: Convert to fraction form
    208,023.80/311,517.30 = 166,551.80/x
  3. Step 3: Cross multiply
    208,023.80x = 311,517.30 × 166,551.80
  4. Step 4: Simplify right side
    208,023.80x = 51,883,767,046.14
  5. Step 5: Solve for x
    x = 51,883,767,046.14/208,023.80
  6. Step 6: Final answer
    x = 249,412.65

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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.