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Finding the Fourth Proportional to 320,844.20, 481,611.90 and 180,876.20

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Solution

The fourth proportional to 320,844.20, 481,611.90 and 180,876.20 is: 271,509.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,844.20 : 481,611.90 = 180,876.20 : x
  2. Step 2: Convert to fraction form
    320,844.20/481,611.90 = 180,876.20/x
  3. Step 3: Cross multiply
    320,844.20x = 481,611.90 × 180,876.20
  4. Step 4: Simplify right side
    320,844.20x = 87,112,130,346.78
  5. Step 5: Solve for x
    x = 87,112,130,346.78/320,844.20
  6. Step 6: Final answer
    x = 271,509.13

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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.