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Finding the Fourth Proportional to 300,975.84, 451,414.55 and 90,564.57

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Solution

The fourth proportional to 300,975.84, 451,414.55 and 90,564.57 is: 135,832.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,975.84 : 451,414.55 = 90,564.57 : x
  2. Step 2: Convert to fraction form
    300,975.84/451,414.55 = 90,564.57/x
  3. Step 3: Cross multiply
    300,975.84x = 451,414.55 × 90,564.57
  4. Step 4: Simplify right side
    300,975.84x = 40,882,164,159.67
  5. Step 5: Solve for x
    x = 40,882,164,159.67/300,975.84
  6. Step 6: Final answer
    x = 135,832.05

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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.