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Finding the Fourth Proportional to 289,608.37, 399,670.37 and 162,279.25

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Solution

The fourth proportional to 289,608.37, 399,670.37 and 162,279.25 is: 223,951.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,608.37 : 399,670.37 = 162,279.25 : x
  2. Step 2: Convert to fraction form
    289,608.37/399,670.37 = 162,279.25/x
  3. Step 3: Cross multiply
    289,608.37x = 399,670.37 × 162,279.25
  4. Step 4: Simplify right side
    289,608.37x = 64,858,207,890.82
  5. Step 5: Solve for x
    x = 64,858,207,890.82/289,608.37
  6. Step 6: Final answer
    x = 223,951.43

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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.