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Finding the Fourth Proportional to 329,420.20, 494,130.30 and 187,702.60

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Solution

The fourth proportional to 329,420.20, 494,130.30 and 187,702.60 is: 281,553.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,420.20 : 494,130.30 = 187,702.60 : x
  2. Step 2: Convert to fraction form
    329,420.20/494,130.30 = 187,702.60/x
  3. Step 3: Cross multiply
    329,420.20x = 494,130.30 × 187,702.60
  4. Step 4: Simplify right side
    329,420.20x = 92,749,542,048.78
  5. Step 5: Solve for x
    x = 92,749,542,048.78/329,420.20
  6. Step 6: Final answer
    x = 281,553.90

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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.