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Finding the Fourth Proportional to 378,173.19, 521,713.67 and 270,704.01

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Solution

The fourth proportional to 378,173.19, 521,713.67 and 270,704.01 is: 373,453.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,173.19 : 521,713.67 = 270,704.01 : x
  2. Step 2: Convert to fraction form
    378,173.19/521,713.67 = 270,704.01/x
  3. Step 3: Cross multiply
    378,173.19x = 521,713.67 × 270,704.01
  4. Step 4: Simplify right side
    378,173.19x = 141,229,981,187.30
  5. Step 5: Solve for x
    x = 141,229,981,187.30/378,173.19
  6. Step 6: Final answer
    x = 373,453.18

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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.