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Finding the Fourth Proportional to 300,250.25, 450,121.01 and 131,642.79

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Solution

The fourth proportional to 300,250.25, 450,121.01 and 131,642.79 is: 197,352.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,250.25 : 450,121.01 = 131,642.79 : x
  2. Step 2: Convert to fraction form
    300,250.25/450,121.01 = 131,642.79/x
  3. Step 3: Cross multiply
    300,250.25x = 450,121.01 × 131,642.79
  4. Step 4: Simplify right side
    300,250.25x = 59,255,184,935.80
  5. Step 5: Solve for x
    x = 59,255,184,935.80/300,250.25
  6. Step 6: Final answer
    x = 197,352.66

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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.