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Finding the Fourth Proportional to 400,396.11, 552,492 and 239,216.91

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Solution

The fourth proportional to 400,396.11, 552,492 and 239,216.91 is: 330,086.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,396.11 : 552,492 = 239,216.91 : x
  2. Step 2: Convert to fraction form
    400,396.11/552,492 = 239,216.91/x
  3. Step 3: Cross multiply
    400,396.11x = 552,492 × 239,216.91
  4. Step 4: Simplify right side
    400,396.11x = 132,165,429,039.72
  5. Step 5: Solve for x
    x = 132,165,429,039.72/400,396.11
  6. Step 6: Final answer
    x = 330,086.70

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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.