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Finding the Fourth Proportional to 252,990.80, 379,243.20 and 146,265.20

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Solution

The fourth proportional to 252,990.80, 379,243.20 and 146,265.20 is: 219,257.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,990.80 : 379,243.20 = 146,265.20 : x
  2. Step 2: Convert to fraction form
    252,990.80/379,243.20 = 146,265.20/x
  3. Step 3: Cross multiply
    252,990.80x = 379,243.20 × 146,265.20
  4. Step 4: Simplify right side
    252,990.80x = 55,470,082,496.64
  5. Step 5: Solve for x
    x = 55,470,082,496.64/252,990.80
  6. Step 6: Final answer
    x = 219,257.31

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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.