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Finding the Fourth Proportional to 303,724.32, 455,704.56 and 126,186.72

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Solution

The fourth proportional to 303,724.32, 455,704.56 and 126,186.72 is: 189,329.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,724.32 : 455,704.56 = 126,186.72 : x
  2. Step 2: Convert to fraction form
    303,724.32/455,704.56 = 126,186.72/x
  3. Step 3: Cross multiply
    303,724.32x = 455,704.56 × 126,186.72
  4. Step 4: Simplify right side
    303,724.32x = 57,503,863,715.44
  5. Step 5: Solve for x
    x = 57,503,863,715.44/303,724.32
  6. Step 6: Final answer
    x = 189,329.14

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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.