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Finding the Fourth Proportional to 328,998.75, 493,500.60 and 79,680.75

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Solution

The fourth proportional to 328,998.75, 493,500.60 and 79,680.75 is: 119,521.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,998.75 : 493,500.60 = 79,680.75 : x
  2. Step 2: Convert to fraction form
    328,998.75/493,500.60 = 79,680.75/x
  3. Step 3: Cross multiply
    328,998.75x = 493,500.60 × 79,680.75
  4. Step 4: Simplify right side
    328,998.75x = 39,322,497,933.45
  5. Step 5: Solve for x
    x = 39,322,497,933.45/328,998.75
  6. Step 6: Final answer
    x = 119,521.72

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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.