Home / 378,321.42-522,087.04-208,561.62

Finding the Fourth Proportional to 378,321.42, 522,087.04 and 208,561.62

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Solution

The fourth proportional to 378,321.42, 522,087.04 and 208,561.62 is: 287,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,321.42 : 522,087.04 = 208,561.62 : x
  2. Step 2: Convert to fraction form
    378,321.42/522,087.04 = 208,561.62/x
  3. Step 3: Cross multiply
    378,321.42x = 522,087.04 × 208,561.62
  4. Step 4: Simplify right side
    378,321.42x = 108,887,318,843.41
  5. Step 5: Solve for x
    x = 108,887,318,843.41/378,321.42
  6. Step 6: Final answer
    x = 287,816.95

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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.