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Finding the Fourth Proportional to 408,628.18, 563,913.39 and 227,342.22

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Solution

The fourth proportional to 408,628.18, 563,913.39 and 227,342.22 is: 313,735.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,628.18 : 563,913.39 = 227,342.22 : x
  2. Step 2: Convert to fraction form
    408,628.18/563,913.39 = 227,342.22/x
  3. Step 3: Cross multiply
    408,628.18x = 563,913.39 × 227,342.22
  4. Step 4: Simplify right side
    408,628.18x = 128,201,321,970.33
  5. Step 5: Solve for x
    x = 128,201,321,970.33/408,628.18
  6. Step 6: Final answer
    x = 313,735.88

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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.