Home / 378,156.79-521,849.67-206,076.29

Finding the Fourth Proportional to 378,156.79, 521,849.67 and 206,076.29

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Solution

The fourth proportional to 378,156.79, 521,849.67 and 206,076.29 is: 284,381.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,156.79 : 521,849.67 = 206,076.29 : x
  2. Step 2: Convert to fraction form
    378,156.79/521,849.67 = 206,076.29/x
  3. Step 3: Cross multiply
    378,156.79x = 521,849.67 × 206,076.29
  4. Step 4: Simplify right side
    378,156.79x = 107,540,843,931.32
  5. Step 5: Solve for x
    x = 107,540,843,931.32/378,156.79
  6. Step 6: Final answer
    x = 284,381.63

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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.