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Finding the Fourth Proportional to 303,379.75, 418,661.21 and 167,414.90

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Solution

The fourth proportional to 303,379.75, 418,661.21 and 167,414.90 is: 231,030.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,379.75 : 418,661.21 = 167,414.90 : x
  2. Step 2: Convert to fraction form
    303,379.75/418,661.21 = 167,414.90/x
  3. Step 3: Cross multiply
    303,379.75x = 418,661.21 × 167,414.90
  4. Step 4: Simplify right side
    303,379.75x = 70,090,123,768.95
  5. Step 5: Solve for x
    x = 70,090,123,768.95/303,379.75
  6. Step 6: Final answer
    x = 231,030.99

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1.5x scale

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.