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Finding the Fourth Proportional to 303,613.44, 455,419.20 and 81,997.44

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Solution

The fourth proportional to 303,613.44, 455,419.20 and 81,997.44 is: 122,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,613.44 : 455,419.20 = 81,997.44 : x
  2. Step 2: Convert to fraction form
    303,613.44/455,419.20 = 81,997.44/x
  3. Step 3: Cross multiply
    303,613.44x = 455,419.20 × 81,997.44
  4. Step 4: Simplify right side
    303,613.44x = 37,343,208,526.85
  5. Step 5: Solve for x
    x = 37,343,208,526.85/303,613.44
  6. Step 6: Final answer
    x = 122,995.90

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1.5x scale

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.