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Finding the Fourth Proportional to 328,987.62, 493,479.81 and 79,669.62

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Solution

The fourth proportional to 328,987.62, 493,479.81 and 79,669.62 is: 119,504.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,987.62 : 493,479.81 = 79,669.62 : x
  2. Step 2: Convert to fraction form
    328,987.62/493,479.81 = 79,669.62/x
  3. Step 3: Cross multiply
    328,987.62x = 493,479.81 × 79,669.62
  4. Step 4: Simplify right side
    328,987.62x = 39,315,348,940.37
  5. Step 5: Solve for x
    x = 39,315,348,940.37/328,987.62
  6. Step 6: Final answer
    x = 119,504.04

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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.