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Finding the Fourth Proportional to 296,684.73, 445,100.90 and 86,322.65

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Solution

The fourth proportional to 296,684.73, 445,100.90 and 86,322.65 is: 129,505.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,684.73 : 445,100.90 = 86,322.65 : x
  2. Step 2: Convert to fraction form
    296,684.73/445,100.90 = 86,322.65/x
  3. Step 3: Cross multiply
    296,684.73x = 445,100.90 × 86,322.65
  4. Step 4: Simplify right side
    296,684.73x = 38,422,286,548.27
  5. Step 5: Solve for x
    x = 38,422,286,548.27/296,684.73
  6. Step 6: Final answer
    x = 129,505.44

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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.