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Finding the Fourth Proportional to 198,341.40, 273,710.82 and 108,917.40

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Solution

The fourth proportional to 198,341.40, 273,710.82 and 108,917.40 is: 150,305.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,341.40 : 273,710.82 = 108,917.40 : x
  2. Step 2: Convert to fraction form
    198,341.40/273,710.82 = 108,917.40/x
  3. Step 3: Cross multiply
    198,341.40x = 273,710.82 × 108,917.40
  4. Step 4: Simplify right side
    198,341.40x = 29,811,870,866.27
  5. Step 5: Solve for x
    x = 29,811,870,866.27/198,341.40
  6. Step 6: Final answer
    x = 150,305.84

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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.