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Finding the Fourth Proportional to 393,238.80, 589,750.47 and 108,861.30

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Solution

The fourth proportional to 393,238.80, 589,750.47 and 108,861.30 is: 163,262.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,238.80 : 589,750.47 = 108,861.30 : x
  2. Step 2: Convert to fraction form
    393,238.80/589,750.47 = 108,861.30/x
  3. Step 3: Cross multiply
    393,238.80x = 589,750.47 × 108,861.30
  4. Step 4: Simplify right side
    393,238.80x = 64,201,002,839.81
  5. Step 5: Solve for x
    x = 64,201,002,839.81/393,238.80
  6. Step 6: Final answer
    x = 163,262.13

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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.