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Finding the Fourth Proportional to 329,525.40, 494,288.10 and 80,207.40

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Solution

The fourth proportional to 329,525.40, 494,288.10 and 80,207.40 is: 120,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,525.40 : 494,288.10 = 80,207.40 : x
  2. Step 2: Convert to fraction form
    329,525.40/494,288.10 = 80,207.40/x
  3. Step 3: Cross multiply
    329,525.40x = 494,288.10 × 80,207.40
  4. Step 4: Simplify right side
    329,525.40x = 39,645,563,351.94
  5. Step 5: Solve for x
    x = 39,645,563,351.94/329,525.40
  6. Step 6: Final answer
    x = 120,311.10

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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.