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Finding the Fourth Proportional to 320,779.43, 442,659.83 and 182,963.81

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Solution

The fourth proportional to 320,779.43, 442,659.83 and 182,963.81 is: 252,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,779.43 : 442,659.83 = 182,963.81 : x
  2. Step 2: Convert to fraction form
    320,779.43/442,659.83 = 182,963.81/x
  3. Step 3: Cross multiply
    320,779.43x = 442,659.83 × 182,963.81
  4. Step 4: Simplify right side
    320,779.43x = 80,990,725,902.63
  5. Step 5: Solve for x
    x = 80,990,725,902.63/320,779.43
  6. Step 6: Final answer
    x = 252,481.05

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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.