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Finding the Fourth Proportional to 251,863.80, 378,087.30 and 152,136.60

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Solution

The fourth proportional to 251,863.80, 378,087.30 and 152,136.60 is: 228,381.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,863.80 : 378,087.30 = 152,136.60 : x
  2. Step 2: Convert to fraction form
    251,863.80/378,087.30 = 152,136.60/x
  3. Step 3: Cross multiply
    251,863.80x = 378,087.30 × 152,136.60
  4. Step 4: Simplify right side
    251,863.80x = 57,520,916,325.18
  5. Step 5: Solve for x
    x = 57,520,916,325.18/251,863.80
  6. Step 6: Final answer
    x = 228,381.04

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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.