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Finding the Fourth Proportional to 328,997.64, 493,494.80 and 79,679.64

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Solution

The fourth proportional to 328,997.64, 493,494.80 and 79,679.64 is: 119,519.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,997.64 : 493,494.80 = 79,679.64 : x
  2. Step 2: Convert to fraction form
    328,997.64/493,494.80 = 79,679.64/x
  3. Step 3: Cross multiply
    328,997.64x = 493,494.80 × 79,679.64
  4. Step 4: Simplify right side
    328,997.64x = 39,321,488,005.87
  5. Step 5: Solve for x
    x = 39,321,488,005.87/328,997.64
  6. Step 6: Final answer
    x = 119,519.06

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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.