Home / 378,046.27-521,703.56-208,280.39

Finding the Fourth Proportional to 378,046.27, 521,703.56 and 208,280.39

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Solution

The fourth proportional to 378,046.27, 521,703.56 and 208,280.39 is: 287,426.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,046.27 : 521,703.56 = 208,280.39 : x
  2. Step 2: Convert to fraction form
    378,046.27/521,703.56 = 208,280.39/x
  3. Step 3: Cross multiply
    378,046.27x = 521,703.56 × 208,280.39
  4. Step 4: Simplify right side
    378,046.27x = 108,660,619,899.79
  5. Step 5: Solve for x
    x = 108,660,619,899.79/378,046.27
  6. Step 6: Final answer
    x = 287,426.78

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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.