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Finding the Fourth Proportional to 303,156.98, 454,735.15 and 81,540.98

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Solution

The fourth proportional to 303,156.98, 454,735.15 and 81,540.98 is: 122,311.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,156.98 : 454,735.15 = 81,540.98 : x
  2. Step 2: Convert to fraction form
    303,156.98/454,735.15 = 81,540.98/x
  3. Step 3: Cross multiply
    303,156.98x = 454,735.15 × 81,540.98
  4. Step 4: Simplify right side
    303,156.98x = 37,079,549,771.45
  5. Step 5: Solve for x
    x = 37,079,549,771.45/303,156.98
  6. Step 6: Final answer
    x = 122,311.38

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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.