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Finding the Fourth Proportional to 378,862.61, 568,387.46 and 112,621.98

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Solution

The fourth proportional to 378,862.61, 568,387.46 and 112,621.98 is: 168,960.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,862.61 : 568,387.46 = 112,621.98 : x
  2. Step 2: Convert to fraction form
    378,862.61/568,387.46 = 112,621.98/x
  3. Step 3: Cross multiply
    378,862.61x = 568,387.46 × 112,621.98
  4. Step 4: Simplify right side
    378,862.61x = 64,012,920,589.26
  5. Step 5: Solve for x
    x = 64,012,920,589.26/378,862.61
  6. Step 6: Final answer
    x = 168,960.78

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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.