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Finding the Fourth Proportional to 320,059.20, 480,160.30 and 120,381.30

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Solution

The fourth proportional to 320,059.20, 480,160.30 and 120,381.30 is: 180,598.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,059.20 : 480,160.30 = 120,381.30 : x
  2. Step 2: Convert to fraction form
    320,059.20/480,160.30 = 120,381.30/x
  3. Step 3: Cross multiply
    320,059.20x = 480,160.30 × 120,381.30
  4. Step 4: Simplify right side
    320,059.20x = 57,802,321,122.39
  5. Step 5: Solve for x
    x = 57,802,321,122.39/320,059.20
  6. Step 6: Final answer
    x = 180,598.84

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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.