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Finding the Fourth Proportional to 208,451.72, 311,930.15 and 180,468.02

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Solution

The fourth proportional to 208,451.72, 311,930.15 and 180,468.02 is: 270,054.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,451.72 : 311,930.15 = 180,468.02 : x
  2. Step 2: Convert to fraction form
    208,451.72/311,930.15 = 180,468.02/x
  3. Step 3: Cross multiply
    208,451.72x = 311,930.15 × 180,468.02
  4. Step 4: Simplify right side
    208,451.72x = 56,293,414,086.81
  5. Step 5: Solve for x
    x = 56,293,414,086.81/208,451.72
  6. Step 6: Final answer
    x = 270,054.93

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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.