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Finding the Fourth Proportional to 329,420.58, 494,130.87 and 80,100.42

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Solution

The fourth proportional to 329,420.58, 494,130.87 and 80,100.42 is: 120,150.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,420.58 : 494,130.87 = 80,100.42 : x
  2. Step 2: Convert to fraction form
    329,420.58/494,130.87 = 80,100.42/x
  3. Step 3: Cross multiply
    329,420.58x = 494,130.87 × 80,100.42
  4. Step 4: Simplify right side
    329,420.58x = 39,580,090,221.97
  5. Step 5: Solve for x
    x = 39,580,090,221.97/329,420.58
  6. Step 6: Final answer
    x = 120,150.63

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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.