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Finding the Fourth Proportional to 356,364.40, 491,388.78 and 227,098.12

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Solution

The fourth proportional to 356,364.40, 491,388.78 and 227,098.12 is: 313,144.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,364.40 : 491,388.78 = 227,098.12 : x
  2. Step 2: Convert to fraction form
    356,364.40/491,388.78 = 227,098.12/x
  3. Step 3: Cross multiply
    356,364.40x = 491,388.78 × 227,098.12
  4. Step 4: Simplify right side
    356,364.40x = 111,593,468,127.09
  5. Step 5: Solve for x
    x = 111,593,468,127.09/356,364.40
  6. Step 6: Final answer
    x = 313,144.27

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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.