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Finding the Fourth Proportional to 215,072.93, 321,978.53 and 150,808.23

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Solution

The fourth proportional to 215,072.93, 321,978.53 and 150,808.23 is: 225,769.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,072.93 : 321,978.53 = 150,808.23 : x
  2. Step 2: Convert to fraction form
    215,072.93/321,978.53 = 150,808.23/x
  3. Step 3: Cross multiply
    215,072.93x = 321,978.53 × 150,808.23
  4. Step 4: Simplify right side
    215,072.93x = 48,557,011,453.26
  5. Step 5: Solve for x
    x = 48,557,011,453.26/215,072.93
  6. Step 6: Final answer
    x = 225,769.99

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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.