Home / 320,136.96-480,205.38-109,776.72

Finding the Fourth Proportional to 320,136.96, 480,205.38 and 109,776.72

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Solution

The fourth proportional to 320,136.96, 480,205.38 and 109,776.72 is: 164,665.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,136.96 : 480,205.38 = 109,776.72 : x
  2. Step 2: Convert to fraction form
    320,136.96/480,205.38 = 109,776.72/x
  3. Step 3: Cross multiply
    320,136.96x = 480,205.38 × 109,776.72
  4. Step 4: Simplify right side
    320,136.96x = 52,715,371,542.75
  5. Step 5: Solve for x
    x = 52,715,371,542.75/320,136.96
  6. Step 6: Final answer
    x = 164,665.06

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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.