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Finding the Fourth Proportional to 393,499.63, 590,183.41 and 109,219.06

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Solution

The fourth proportional to 393,499.63, 590,183.41 and 109,219.06 is: 163,810.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,499.63 : 590,183.41 = 109,219.06 : x
  2. Step 2: Convert to fraction form
    393,499.63/590,183.41 = 109,219.06/x
  3. Step 3: Cross multiply
    393,499.63x = 590,183.41 × 109,219.06
  4. Step 4: Simplify right side
    393,499.63x = 64,459,277,540.84
  5. Step 5: Solve for x
    x = 64,459,277,540.84/393,499.63
  6. Step 6: Final answer
    x = 163,810.26

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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.