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Finding the Fourth Proportional to 216,447.65, 324,743.45 and 136,393.11

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Solution

The fourth proportional to 216,447.65, 324,743.45 and 136,393.11 is: 204,635.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,447.65 : 324,743.45 = 136,393.11 : x
  2. Step 2: Convert to fraction form
    216,447.65/324,743.45 = 136,393.11/x
  3. Step 3: Cross multiply
    216,447.65x = 324,743.45 × 136,393.11
  4. Step 4: Simplify right side
    216,447.65x = 44,292,768,415.66
  5. Step 5: Solve for x
    x = 44,292,768,415.66/216,447.65
  6. Step 6: Final answer
    x = 204,635.02

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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.