Home / 378,079.06-521,748.69-208,313.14

Finding the Fourth Proportional to 378,079.06, 521,748.69 and 208,313.14

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Solution

The fourth proportional to 378,079.06, 521,748.69 and 208,313.14 is: 287,471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,079.06 : 521,748.69 = 208,313.14 : x
  2. Step 2: Convert to fraction form
    378,079.06/521,748.69 = 208,313.14/x
  3. Step 3: Cross multiply
    378,079.06x = 521,748.69 × 208,313.14
  4. Step 4: Simplify right side
    378,079.06x = 108,687,107,904.79
  5. Step 5: Solve for x
    x = 108,687,107,904.79/378,079.06
  6. Step 6: Final answer
    x = 287,471.91

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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.