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Finding the Fourth Proportional to 300,250.74, 450,121.76 and 131,643.30

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Solution

The fourth proportional to 300,250.74, 450,121.76 and 131,643.30 is: 197,353.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,250.74 : 450,121.76 = 131,643.30 : x
  2. Step 2: Convert to fraction form
    300,250.74/450,121.76 = 131,643.30/x
  3. Step 3: Cross multiply
    300,250.74x = 450,121.76 × 131,643.30
  4. Step 4: Simplify right side
    300,250.74x = 59,255,513,888.21
  5. Step 5: Solve for x
    x = 59,255,513,888.21/300,250.74
  6. Step 6: Final answer
    x = 197,353.43

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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.