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Finding the Fourth Proportional to 371,571.81, 512,770.05 and 218,615.76

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Solution

The fourth proportional to 371,571.81, 512,770.05 and 218,615.76 is: 301,690.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,571.81 : 512,770.05 = 218,615.76 : x
  2. Step 2: Convert to fraction form
    371,571.81/512,770.05 = 218,615.76/x
  3. Step 3: Cross multiply
    371,571.81x = 512,770.05 × 218,615.76
  4. Step 4: Simplify right side
    371,571.81x = 112,099,614,185.99
  5. Step 5: Solve for x
    x = 112,099,614,185.99/371,571.81
  6. Step 6: Final answer
    x = 301,690.31

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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.