Home / 215,855.80-323,438.10-136,828.60

Finding the Fourth Proportional to 215,855.80, 323,438.10 and 136,828.60

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Solution

The fourth proportional to 215,855.80, 323,438.10 and 136,828.60 is: 205,023.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,855.80 : 323,438.10 = 136,828.60 : x
  2. Step 2: Convert to fraction form
    215,855.80/323,438.10 = 136,828.60/x
  3. Step 3: Cross multiply
    215,855.80x = 323,438.10 × 136,828.60
  4. Step 4: Simplify right side
    215,855.80x = 44,255,582,409.66
  5. Step 5: Solve for x
    x = 44,255,582,409.66/215,855.80
  6. Step 6: Final answer
    x = 205,023.83

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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.