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Finding the Fourth Proportional to 251,039.60, 376,440.60 and 145,890.80

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Solution

The fourth proportional to 251,039.60, 376,440.60 and 145,890.80 is: 218,767.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,039.60 : 376,440.60 = 145,890.80 : x
  2. Step 2: Convert to fraction form
    251,039.60/376,440.60 = 145,890.80/x
  3. Step 3: Cross multiply
    251,039.60x = 376,440.60 × 145,890.80
  4. Step 4: Simplify right side
    251,039.60x = 54,919,220,286.48
  5. Step 5: Solve for x
    x = 54,919,220,286.48/251,039.60
  6. Step 6: Final answer
    x = 218,767.16

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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.