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Finding the Fourth Proportional to 576,107.70, 863,432.55 and 220,647.30

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Solution

The fourth proportional to 576,107.70, 863,432.55 and 220,647.30 is: 330,691.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,107.70 : 863,432.55 = 220,647.30 : x
  2. Step 2: Convert to fraction form
    576,107.70/863,432.55 = 220,647.30/x
  3. Step 3: Cross multiply
    576,107.70x = 863,432.55 × 220,647.30
  4. Step 4: Simplify right side
    576,107.70x = 190,514,060,889.62
  5. Step 5: Solve for x
    x = 190,514,060,889.62/576,107.70
  6. Step 6: Final answer
    x = 330,691.75

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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.