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Finding the Fourth Proportional to 394,582.80, 544,513.20 and 222,499.20

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Solution

The fourth proportional to 394,582.80, 544,513.20 and 222,499.20 is: 307,042.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,582.80 : 544,513.20 = 222,499.20 : x
  2. Step 2: Convert to fraction form
    394,582.80/544,513.20 = 222,499.20/x
  3. Step 3: Cross multiply
    394,582.80x = 544,513.20 × 222,499.20
  4. Step 4: Simplify right side
    394,582.80x = 121,153,751,389.44
  5. Step 5: Solve for x
    x = 121,153,751,389.44/394,582.80
  6. Step 6: Final answer
    x = 307,042.66

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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.