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Finding the Fourth Proportional to 366,990.71, 550,536.09 and 213,188.96

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Solution

The fourth proportional to 366,990.71, 550,536.09 and 213,188.96 is: 319,812.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,990.71 : 550,536.09 = 213,188.96 : x
  2. Step 2: Convert to fraction form
    366,990.71/550,536.09 = 213,188.96/x
  3. Step 3: Cross multiply
    366,990.71x = 550,536.09 × 213,188.96
  4. Step 4: Simplify right side
    366,990.71x = 117,368,213,716.89
  5. Step 5: Solve for x
    x = 117,368,213,716.89/366,990.71
  6. Step 6: Final answer
    x = 319,812.50

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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.