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Finding the Fourth Proportional to 379,230.22, 568,930.17 and 142,574.95

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Solution

The fourth proportional to 379,230.22, 568,930.17 and 142,574.95 is: 213,894.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,230.22 : 568,930.17 = 142,574.95 : x
  2. Step 2: Convert to fraction form
    379,230.22/568,930.17 = 142,574.95/x
  3. Step 3: Cross multiply
    379,230.22x = 568,930.17 × 142,574.95
  4. Step 4: Simplify right side
    379,230.22x = 81,115,187,696.59
  5. Step 5: Solve for x
    x = 81,115,187,696.59/379,230.22
  6. Step 6: Final answer
    x = 213,894.32

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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.