Home / 378,147.29-521,836.56-206,066.77

Finding the Fourth Proportional to 378,147.29, 521,836.56 and 206,066.77

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Solution

The fourth proportional to 378,147.29, 521,836.56 and 206,066.77 is: 284,368.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,147.29 : 521,836.56 = 206,066.77 : x
  2. Step 2: Convert to fraction form
    378,147.29/521,836.56 = 206,066.77/x
  3. Step 3: Cross multiply
    378,147.29x = 521,836.56 × 206,066.77
  4. Step 4: Simplify right side
    378,147.29x = 107,533,173,082.52
  5. Step 5: Solve for x
    x = 107,533,173,082.52/378,147.29
  6. Step 6: Final answer
    x = 284,368.49

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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.