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Finding the Fourth Proportional to 381,979.40, 573,228.30 and 248,534.60

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Solution

The fourth proportional to 381,979.40, 573,228.30 and 248,534.60 is: 372,970.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,979.40 : 573,228.30 = 248,534.60 : x
  2. Step 2: Convert to fraction form
    381,979.40/573,228.30 = 248,534.60/x
  3. Step 3: Cross multiply
    381,979.40x = 573,228.30 × 248,534.60
  4. Step 4: Simplify right side
    381,979.40x = 142,467,066,249.18
  5. Step 5: Solve for x
    x = 142,467,066,249.18/381,979.40
  6. Step 6: Final answer
    x = 372,970.55

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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.