Home / 378,947.27-522,928.86-215,588.39

Finding the Fourth Proportional to 378,947.27, 522,928.86 and 215,588.39

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Solution

The fourth proportional to 378,947.27, 522,928.86 and 215,588.39 is: 297,501.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,947.27 : 522,928.86 = 215,588.39 : x
  2. Step 2: Convert to fraction form
    378,947.27/522,928.86 = 215,588.39/x
  3. Step 3: Cross multiply
    378,947.27x = 522,928.86 × 215,588.39
  4. Step 4: Simplify right side
    378,947.27x = 112,737,388,397.29
  5. Step 5: Solve for x
    x = 112,737,388,397.29/378,947.27
  6. Step 6: Final answer
    x = 297,501.52

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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.