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Finding the Fourth Proportional to 329,707.09, 494,561.85 and 80,389.09

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Solution

The fourth proportional to 329,707.09, 494,561.85 and 80,389.09 is: 120,583.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,707.09 : 494,561.85 = 80,389.09 : x
  2. Step 2: Convert to fraction form
    329,707.09/494,561.85 = 80,389.09/x
  3. Step 3: Cross multiply
    329,707.09x = 494,561.85 × 80,389.09
  4. Step 4: Simplify right side
    329,707.09x = 39,757,377,070.22
  5. Step 5: Solve for x
    x = 39,757,377,070.22/329,707.09
  6. Step 6: Final answer
    x = 120,583.93

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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.