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Finding the Fourth Proportional to 380,022.60, 570,120.30 and 222,169.80

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Solution

The fourth proportional to 380,022.60, 570,120.30 and 222,169.80 is: 333,305.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,022.60 : 570,120.30 = 222,169.80 : x
  2. Step 2: Convert to fraction form
    380,022.60/570,120.30 = 222,169.80/x
  3. Step 3: Cross multiply
    380,022.60x = 570,120.30 × 222,169.80
  4. Step 4: Simplify right side
    380,022.60x = 126,663,513,026.94
  5. Step 5: Solve for x
    x = 126,663,513,026.94/380,022.60
  6. Step 6: Final answer
    x = 333,305.21

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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.