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Finding the Fourth Proportional to 215,536.40, 323,450.40 and 120,766.40

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Solution

The fourth proportional to 215,536.40, 323,450.40 and 120,766.40 is: 181,231.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,536.40 : 323,450.40 = 120,766.40 : x
  2. Step 2: Convert to fraction form
    215,536.40/323,450.40 = 120,766.40/x
  3. Step 3: Cross multiply
    215,536.40x = 323,450.40 × 120,766.40
  4. Step 4: Simplify right side
    215,536.40x = 39,061,940,386.56
  5. Step 5: Solve for x
    x = 39,061,940,386.56/215,536.40
  6. Step 6: Final answer
    x = 181,231.29

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1.5x scale

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.