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Finding the Fourth Proportional to 372,449.44, 513,991.88 and 211,311.28

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Solution

The fourth proportional to 372,449.44, 513,991.88 and 211,311.28 is: 291,616.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,449.44 : 513,991.88 = 211,311.28 : x
  2. Step 2: Convert to fraction form
    372,449.44/513,991.88 = 211,311.28/x
  3. Step 3: Cross multiply
    372,449.44x = 513,991.88 × 211,311.28
  4. Step 4: Simplify right side
    372,449.44x = 108,612,282,072.41
  5. Step 5: Solve for x
    x = 108,612,282,072.41/372,449.44
  6. Step 6: Final answer
    x = 291,616.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.