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Finding the Fourth Proportional to 382,490.54, 573,754.54 and 145,789.10

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Solution

The fourth proportional to 382,490.54, 573,754.54 and 145,789.10 is: 218,690.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,490.54 : 573,754.54 = 145,789.10 : x
  2. Step 2: Convert to fraction form
    382,490.54/573,754.54 = 145,789.10/x
  3. Step 3: Cross multiply
    382,490.54x = 573,754.54 × 145,789.10
  4. Step 4: Simplify right side
    382,490.54x = 83,647,158,007.51
  5. Step 5: Solve for x
    x = 83,647,158,007.51/382,490.54
  6. Step 6: Final answer
    x = 218,690.79

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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.