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Finding the Fourth Proportional to 373,681.75, 515,680.82 and 222,778.75

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Solution

The fourth proportional to 373,681.75, 515,680.82 and 222,778.75 is: 307,434.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,681.75 : 515,680.82 = 222,778.75 : x
  2. Step 2: Convert to fraction form
    373,681.75/515,680.82 = 222,778.75/x
  3. Step 3: Cross multiply
    373,681.75x = 515,680.82 × 222,778.75
  4. Step 4: Simplify right side
    373,681.75x = 114,882,728,478.58
  5. Step 5: Solve for x
    x = 114,882,728,478.58/373,681.75
  6. Step 6: Final answer
    x = 307,434.68

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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.