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Finding the Fourth Proportional to 307,179.30, 424,169.28 and 192,650.70

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Solution

The fourth proportional to 307,179.30, 424,169.28 and 192,650.70 is: 266,022.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,179.30 : 424,169.28 = 192,650.70 : x
  2. Step 2: Convert to fraction form
    307,179.30/424,169.28 = 192,650.70/x
  3. Step 3: Cross multiply
    307,179.30x = 424,169.28 × 192,650.70
  4. Step 4: Simplify right side
    307,179.30x = 81,716,508,710.50
  5. Step 5: Solve for x
    x = 81,716,508,710.50/307,179.30
  6. Step 6: Final answer
    x = 266,022.19

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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.