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Finding the Fourth Proportional to 252,993.89, 379,490.47 and 66,005.39

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Solution

The fourth proportional to 252,993.89, 379,490.47 and 66,005.39 is: 99,007.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,993.89 : 379,490.47 = 66,005.39 : x
  2. Step 2: Convert to fraction form
    252,993.89/379,490.47 = 66,005.39/x
  3. Step 3: Cross multiply
    252,993.89x = 379,490.47 × 66,005.39
  4. Step 4: Simplify right side
    252,993.89x = 25,048,416,473.63
  5. Step 5: Solve for x
    x = 25,048,416,473.63/252,993.89
  6. Step 6: Final answer
    x = 99,007.99

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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.