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Finding the Fourth Proportional to 215,890.62, 323,551.62 and 121,119

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Solution

The fourth proportional to 215,890.62, 323,551.62 and 121,119 is: 181,519.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,890.62 : 323,551.62 = 121,119 : x
  2. Step 2: Convert to fraction form
    215,890.62/323,551.62 = 121,119/x
  3. Step 3: Cross multiply
    215,890.62x = 323,551.62 × 121,119
  4. Step 4: Simplify right side
    215,890.62x = 39,188,248,662.78
  5. Step 5: Solve for x
    x = 39,188,248,662.78/215,890.62
  6. Step 6: Final answer
    x = 181,519.00

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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.