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Finding the Fourth Proportional to 393,158.56, 589,660.08 and 112,704.16

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Solution

The fourth proportional to 393,158.56, 589,660.08 and 112,704.16 is: 169,033.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,158.56 : 589,660.08 = 112,704.16 : x
  2. Step 2: Convert to fraction form
    393,158.56/589,660.08 = 112,704.16/x
  3. Step 3: Cross multiply
    393,158.56x = 589,660.08 × 112,704.16
  4. Step 4: Simplify right side
    393,158.56x = 66,457,144,001.93
  5. Step 5: Solve for x
    x = 66,457,144,001.93/393,158.56
  6. Step 6: Final answer
    x = 169,033.95

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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.