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Finding the Fourth Proportional to 216,996.65, 299,380.88 and 126,317.96

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Solution

The fourth proportional to 216,996.65, 299,380.88 and 126,317.96 is: 174,275.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,996.65 : 299,380.88 = 126,317.96 : x
  2. Step 2: Convert to fraction form
    216,996.65/299,380.88 = 126,317.96/x
  3. Step 3: Cross multiply
    216,996.65x = 299,380.88 × 126,317.96
  4. Step 4: Simplify right side
    216,996.65x = 37,817,180,843.50
  5. Step 5: Solve for x
    x = 37,817,180,843.50/216,996.65
  6. Step 6: Final answer
    x = 174,275.42

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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.