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Finding the Fourth Proportional to 320,840.20, 481,605.90 and 180,872.20

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Solution

The fourth proportional to 320,840.20, 481,605.90 and 180,872.20 is: 271,503.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,840.20 : 481,605.90 = 180,872.20 : x
  2. Step 2: Convert to fraction form
    320,840.20/481,605.90 = 180,872.20/x
  3. Step 3: Cross multiply
    320,840.20x = 481,605.90 × 180,872.20
  4. Step 4: Simplify right side
    320,840.20x = 87,109,118,665.98
  5. Step 5: Solve for x
    x = 87,109,118,665.98/320,840.20
  6. Step 6: Final answer
    x = 271,503.13

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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.