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Finding the Fourth Proportional to 240,859, 361,375.38 and 128,420.92

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Solution

The fourth proportional to 240,859, 361,375.38 and 128,420.92 is: 192,677.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,859 : 361,375.38 = 128,420.92 : x
  2. Step 2: Convert to fraction form
    240,859/361,375.38 = 128,420.92/x
  3. Step 3: Cross multiply
    240,859x = 361,375.38 × 128,420.92
  4. Step 4: Simplify right side
    240,859x = 46,408,158,764.95
  5. Step 5: Solve for x
    x = 46,408,158,764.95/240,859
  6. Step 6: Final answer
    x = 192,677.70

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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.