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Finding the Fourth Proportional to 400,422.80, 552,621.24 and 239,274.44

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Solution

The fourth proportional to 400,422.80, 552,621.24 and 239,274.44 is: 330,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,422.80 : 552,621.24 = 239,274.44 : x
  2. Step 2: Convert to fraction form
    400,422.80/552,621.24 = 239,274.44/x
  3. Step 3: Cross multiply
    400,422.80x = 552,621.24 × 239,274.44
  4. Step 4: Simplify right side
    400,422.80x = 132,228,137,733.11
  5. Step 5: Solve for x
    x = 132,228,137,733.11/400,422.80
  6. Step 6: Final answer
    x = 330,221.30

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1.5x scale

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.