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Finding the Fourth Proportional to 280,834.53, 387,754.62 and 173,551.65

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Solution

The fourth proportional to 280,834.53, 387,754.62 and 173,551.65 is: 239,626.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,834.53 : 387,754.62 = 173,551.65 : x
  2. Step 2: Convert to fraction form
    280,834.53/387,754.62 = 173,551.65/x
  3. Step 3: Cross multiply
    280,834.53x = 387,754.62 × 173,551.65
  4. Step 4: Simplify right side
    280,834.53x = 67,295,454,096.12
  5. Step 5: Solve for x
    x = 67,295,454,096.12/280,834.53
  6. Step 6: Final answer
    x = 239,626.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.