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Finding the Fourth Proportional to 320,879.72, 442,860.35 and 184,887.62

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Solution

The fourth proportional to 320,879.72, 442,860.35 and 184,887.62 is: 255,171.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,879.72 : 442,860.35 = 184,887.62 : x
  2. Step 2: Convert to fraction form
    320,879.72/442,860.35 = 184,887.62/x
  3. Step 3: Cross multiply
    320,879.72x = 442,860.35 × 184,887.62
  4. Step 4: Simplify right side
    320,879.72x = 81,879,396,103.87
  5. Step 5: Solve for x
    x = 81,879,396,103.87/320,879.72
  6. Step 6: Final answer
    x = 255,171.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.