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Finding the Fourth Proportional to 250,643.29, 375,814.70 and 79,791.20

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Solution

The fourth proportional to 250,643.29, 375,814.70 and 79,791.20 is: 119,638.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,643.29 : 375,814.70 = 79,791.20 : x
  2. Step 2: Convert to fraction form
    250,643.29/375,814.70 = 79,791.20/x
  3. Step 3: Cross multiply
    250,643.29x = 375,814.70 × 79,791.20
  4. Step 4: Simplify right side
    250,643.29x = 29,986,705,491.68
  5. Step 5: Solve for x
    x = 29,986,705,491.68/250,643.29
  6. Step 6: Final answer
    x = 119,638.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.