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Finding the Fourth Proportional to 371,191.41, 512,212.77 and 218,234.61

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Solution

The fourth proportional to 371,191.41, 512,212.77 and 218,234.61 is: 301,145.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,191.41 : 512,212.77 = 218,234.61 : x
  2. Step 2: Convert to fraction form
    371,191.41/512,212.77 = 218,234.61/x
  3. Step 3: Cross multiply
    371,191.41x = 512,212.77 × 218,234.61
  4. Step 4: Simplify right side
    371,191.41x = 111,782,554,097.97
  5. Step 5: Solve for x
    x = 111,782,554,097.97/371,191.41
  6. Step 6: Final answer
    x = 301,145.32

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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.