Home / 378,013.29-521,658.31-208,247.41

Finding the Fourth Proportional to 378,013.29, 521,658.31 and 208,247.41

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Solution

The fourth proportional to 378,013.29, 521,658.31 and 208,247.41 is: 287,381.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,013.29 : 521,658.31 = 208,247.41 : x
  2. Step 2: Convert to fraction form
    378,013.29/521,658.31 = 208,247.41/x
  3. Step 3: Cross multiply
    378,013.29x = 521,658.31 × 208,247.41
  4. Step 4: Simplify right side
    378,013.29x = 108,633,991,962.48
  5. Step 5: Solve for x
    x = 108,633,991,962.48/378,013.29
  6. Step 6: Final answer
    x = 287,381.41

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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.