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Finding the Fourth Proportional to 380,636.88, 570,776.48 and 220,758.22

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Solution

The fourth proportional to 380,636.88, 570,776.48 and 220,758.22 is: 331,033.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,636.88 : 570,776.48 = 220,758.22 : x
  2. Step 2: Convert to fraction form
    380,636.88/570,776.48 = 220,758.22/x
  3. Step 3: Cross multiply
    380,636.88x = 570,776.48 × 220,758.22
  4. Step 4: Simplify right side
    380,636.88x = 126,003,599,742.67
  5. Step 5: Solve for x
    x = 126,003,599,742.67/380,636.88
  6. Step 6: Final answer
    x = 331,033.61

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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.