Home / 215,464.80-323,456.40-213,909.60

Finding the Fourth Proportional to 215,464.80, 323,456.40 and 213,909.60

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Solution

The fourth proportional to 215,464.80, 323,456.40 and 213,909.60 is: 321,121.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,464.80 : 323,456.40 = 213,909.60 : x
  2. Step 2: Convert to fraction form
    215,464.80/323,456.40 = 213,909.60/x
  3. Step 3: Cross multiply
    215,464.80x = 323,456.40 × 213,909.60
  4. Step 4: Simplify right side
    215,464.80x = 69,190,429,141.44
  5. Step 5: Solve for x
    x = 69,190,429,141.44/215,464.80
  6. Step 6: Final answer
    x = 321,121.73

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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.