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Finding the Fourth Proportional to 320,073.58, 480,181.80 and 120,395.62

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Solution

The fourth proportional to 320,073.58, 480,181.80 and 120,395.62 is: 180,620.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,073.58 : 480,181.80 = 120,395.62 : x
  2. Step 2: Convert to fraction form
    320,073.58/480,181.80 = 120,395.62/x
  3. Step 3: Cross multiply
    320,073.58x = 480,181.80 × 120,395.62
  4. Step 4: Simplify right side
    320,073.58x = 57,811,785,523.72
  5. Step 5: Solve for x
    x = 57,811,785,523.72/320,073.58
  6. Step 6: Final answer
    x = 180,620.30

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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.