Home / 378,534.14-522,385.64-215,164.74

Finding the Fourth Proportional to 378,534.14, 522,385.64 and 215,164.74

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Solution

The fourth proportional to 378,534.14, 522,385.64 and 215,164.74 is: 296,932.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,534.14 : 522,385.64 = 215,164.74 : x
  2. Step 2: Convert to fraction form
    378,534.14/522,385.64 = 215,164.74/x
  3. Step 3: Cross multiply
    378,534.14x = 522,385.64 × 215,164.74
  4. Step 4: Simplify right side
    378,534.14x = 112,398,970,410.33
  5. Step 5: Solve for x
    x = 112,398,970,410.33/378,534.14
  6. Step 6: Final answer
    x = 296,932.19

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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.