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Finding the Fourth Proportional to 393,107.13, 589,657.46 and 112,624.65

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Solution

The fourth proportional to 393,107.13, 589,657.46 and 112,624.65 is: 168,936.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,107.13 : 589,657.46 = 112,624.65 : x
  2. Step 2: Convert to fraction form
    393,107.13/589,657.46 = 112,624.65/x
  3. Step 3: Cross multiply
    393,107.13x = 589,657.46 × 112,624.65
  4. Step 4: Simplify right side
    393,107.13x = 66,409,964,489.27
  5. Step 5: Solve for x
    x = 66,409,964,489.27/393,107.13
  6. Step 6: Final answer
    x = 168,936.05

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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.