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Finding the Fourth Proportional to 399,575.70, 599,363.55 and 162,789.30

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Solution

The fourth proportional to 399,575.70, 599,363.55 and 162,789.30 is: 244,183.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,575.70 : 599,363.55 = 162,789.30 : x
  2. Step 2: Convert to fraction form
    399,575.70/599,363.55 = 162,789.30/x
  3. Step 3: Cross multiply
    399,575.70x = 599,363.55 × 162,789.30
  4. Step 4: Simplify right side
    399,575.70x = 97,569,972,750.02
  5. Step 5: Solve for x
    x = 97,569,972,750.02/399,575.70
  6. Step 6: Final answer
    x = 244,183.95

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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.