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Finding the Fourth Proportional to 380,620.22, 570,751.58 and 220,741.61

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Solution

The fourth proportional to 380,620.22, 570,751.58 and 220,741.61 is: 331,008.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,620.22 : 570,751.58 = 220,741.61 : x
  2. Step 2: Convert to fraction form
    380,620.22/570,751.58 = 220,741.61/x
  3. Step 3: Cross multiply
    380,620.22x = 570,751.58 × 220,741.61
  4. Step 4: Simplify right side
    380,620.22x = 125,988,620,377.34
  5. Step 5: Solve for x
    x = 125,988,620,377.34/380,620.22
  6. Step 6: Final answer
    x = 331,008.75

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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.