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Finding the Fourth Proportional to 303,635.97, 455,731.74 and 153,979.56

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Solution

The fourth proportional to 303,635.97, 455,731.74 and 153,979.56 is: 231,110.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,635.97 : 455,731.74 = 153,979.56 : x
  2. Step 2: Convert to fraction form
    303,635.97/455,731.74 = 153,979.56/x
  3. Step 3: Cross multiply
    303,635.97x = 455,731.74 × 153,979.56
  4. Step 4: Simplify right side
    303,635.97x = 70,173,372,803.23
  5. Step 5: Solve for x
    x = 70,173,372,803.23/303,635.97
  6. Step 6: Final answer
    x = 231,110.21

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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.