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Finding the Fourth Proportional to 240,161, 360,128.34 and 140,349.92

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Solution

The fourth proportional to 240,161, 360,128.34 and 140,349.92 is: 210,458.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,161 : 360,128.34 = 140,349.92 : x
  2. Step 2: Convert to fraction form
    240,161/360,128.34 = 140,349.92/x
  3. Step 3: Cross multiply
    240,161x = 360,128.34 × 140,349.92
  4. Step 4: Simplify right side
    240,161x = 50,543,983,708.73
  5. Step 5: Solve for x
    x = 50,543,983,708.73/240,161
  6. Step 6: Final answer
    x = 210,458.75

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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.