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Finding the Fourth Proportional to 300,251.25, 450,122.51 and 131,643.79

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Solution

The fourth proportional to 300,251.25, 450,122.51 and 131,643.79 is: 197,354.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,251.25 : 450,122.51 = 131,643.79 : x
  2. Step 2: Convert to fraction form
    300,251.25/450,122.51 = 131,643.79/x
  3. Step 3: Cross multiply
    300,251.25x = 450,122.51 × 131,643.79
  4. Step 4: Simplify right side
    300,251.25x = 59,255,832,522.49
  5. Step 5: Solve for x
    x = 59,255,832,522.49/300,251.25
  6. Step 6: Final answer
    x = 197,354.16

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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.