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Finding the Fourth Proportional to 467,399.85, 645,143.99 and 276,479.61

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Solution

The fourth proportional to 467,399.85, 645,143.99 and 276,479.61 is: 381,620.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,399.85 : 645,143.99 = 276,479.61 : x
  2. Step 2: Convert to fraction form
    467,399.85/645,143.99 = 276,479.61/x
  3. Step 3: Cross multiply
    467,399.85x = 645,143.99 × 276,479.61
  4. Step 4: Simplify right side
    467,399.85x = 178,369,157,366.65
  5. Step 5: Solve for x
    x = 178,369,157,366.65/467,399.85
  6. Step 6: Final answer
    x = 381,620.06

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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.