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Finding the Fourth Proportional to 319,463.45, 479,144.39 and 106,213.62

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Solution

The fourth proportional to 319,463.45, 479,144.39 and 106,213.62 is: 159,303.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,463.45 : 479,144.39 = 106,213.62 : x
  2. Step 2: Convert to fraction form
    319,463.45/479,144.39 = 106,213.62/x
  3. Step 3: Cross multiply
    319,463.45x = 479,144.39 × 106,213.62
  4. Step 4: Simplify right side
    319,463.45x = 50,891,659,633.52
  5. Step 5: Solve for x
    x = 50,891,659,633.52/319,463.45
  6. Step 6: Final answer
    x = 159,303.55

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1.5x scale

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.