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Finding the Fourth Proportional to 215,775.36, 323,438.31 and 120,866.36

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Solution

The fourth proportional to 215,775.36, 323,438.31 and 120,866.36 is: 181,173.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,775.36 : 323,438.31 = 120,866.36 : x
  2. Step 2: Convert to fraction form
    215,775.36/323,438.31 = 120,866.36/x
  3. Step 3: Cross multiply
    215,775.36x = 323,438.31 × 120,866.36
  4. Step 4: Simplify right side
    215,775.36x = 39,092,809,597.06
  5. Step 5: Solve for x
    x = 39,092,809,597.06/215,775.36
  6. Step 6: Final answer
    x = 181,173.65

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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.