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Finding the Fourth Proportional to 329,491.80, 494,237.70 and 305,872.20

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Solution

The fourth proportional to 329,491.80, 494,237.70 and 305,872.20 is: 458,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,491.80 : 494,237.70 = 305,872.20 : x
  2. Step 2: Convert to fraction form
    329,491.80/494,237.70 = 305,872.20/x
  3. Step 3: Cross multiply
    329,491.80x = 494,237.70 × 305,872.20
  4. Step 4: Simplify right side
    329,491.80x = 151,173,572,621.94
  5. Step 5: Solve for x
    x = 151,173,572,621.94/329,491.80
  6. Step 6: Final answer
    x = 458,808.30

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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.