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Finding the Fourth Proportional to 329,772.60, 494,658.90 and 262,121.40

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Solution

The fourth proportional to 329,772.60, 494,658.90 and 262,121.40 is: 393,182.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,772.60 : 494,658.90 = 262,121.40 : x
  2. Step 2: Convert to fraction form
    329,772.60/494,658.90 = 262,121.40/x
  3. Step 3: Cross multiply
    329,772.60x = 494,658.90 × 262,121.40
  4. Step 4: Simplify right side
    329,772.60x = 129,660,683,390.46
  5. Step 5: Solve for x
    x = 129,660,683,390.46/329,772.60
  6. Step 6: Final answer
    x = 393,182.10

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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.