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Finding the Fourth Proportional to 378,425.71, 522,229.04 and 227,525.23

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Solution

The fourth proportional to 378,425.71, 522,229.04 and 227,525.23 is: 313,985.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,425.71 : 522,229.04 = 227,525.23 : x
  2. Step 2: Convert to fraction form
    378,425.71/522,229.04 = 227,525.23/x
  3. Step 3: Cross multiply
    378,425.71x = 522,229.04 × 227,525.23
  4. Step 4: Simplify right side
    378,425.71x = 118,820,282,438.68
  5. Step 5: Solve for x
    x = 118,820,282,438.68/378,425.71
  6. Step 6: Final answer
    x = 313,985.76

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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.