Home / 378,057.13-521,718.54-208,291.26

Finding the Fourth Proportional to 378,057.13, 521,718.54 and 208,291.26

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Solution

The fourth proportional to 378,057.13, 521,718.54 and 208,291.26 is: 287,441.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,057.13 : 521,718.54 = 208,291.26 : x
  2. Step 2: Convert to fraction form
    378,057.13/521,718.54 = 208,291.26/x
  3. Step 3: Cross multiply
    378,057.13x = 521,718.54 × 208,291.26
  4. Step 4: Simplify right side
    378,057.13x = 108,669,412,061.96
  5. Step 5: Solve for x
    x = 108,669,412,061.96/378,057.13
  6. Step 6: Final answer
    x = 287,441.77

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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.