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Finding the Fourth Proportional to 303,422.20, 455,186.70 and 103,695.64

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Solution

The fourth proportional to 303,422.20, 455,186.70 and 103,695.64 is: 155,561.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,422.20 : 455,186.70 = 103,695.64 : x
  2. Step 2: Convert to fraction form
    303,422.20/455,186.70 = 103,695.64/x
  3. Step 3: Cross multiply
    303,422.20x = 455,186.70 × 103,695.64
  4. Step 4: Simplify right side
    303,422.20x = 47,200,876,175.99
  5. Step 5: Solve for x
    x = 47,200,876,175.99/303,422.20
  6. Step 6: Final answer
    x = 155,561.71

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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.