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Finding the Fourth Proportional to 251,990.40, 378,131.40 and 94,234.80

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Solution

The fourth proportional to 251,990.40, 378,131.40 and 94,234.80 is: 141,406.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,990.40 : 378,131.40 = 94,234.80 : x
  2. Step 2: Convert to fraction form
    251,990.40/378,131.40 = 94,234.80/x
  3. Step 3: Cross multiply
    251,990.40x = 378,131.40 × 94,234.80
  4. Step 4: Simplify right side
    251,990.40x = 35,633,136,852.72
  5. Step 5: Solve for x
    x = 35,633,136,852.72/251,990.40
  6. Step 6: Final answer
    x = 141,406.72

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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.