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Finding the Fourth Proportional to 215,399.94, 322,395.54 and 158,458.69

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Solution

The fourth proportional to 215,399.94, 322,395.54 and 158,458.69 is: 237,169.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,399.94 : 322,395.54 = 158,458.69 : x
  2. Step 2: Convert to fraction form
    215,399.94/322,395.54 = 158,458.69/x
  3. Step 3: Cross multiply
    215,399.94x = 322,395.54 × 158,458.69
  4. Step 4: Simplify right side
    215,399.94x = 51,086,374,930.24
  5. Step 5: Solve for x
    x = 51,086,374,930.24/215,399.94
  6. Step 6: Final answer
    x = 237,169.87

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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.