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Finding the Fourth Proportional to 215,202.75, 322,855.98 and 67,458.75

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Solution

The fourth proportional to 215,202.75, 322,855.98 and 67,458.75 is: 101,204.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,202.75 : 322,855.98 = 67,458.75 : x
  2. Step 2: Convert to fraction form
    215,202.75/322,855.98 = 67,458.75/x
  3. Step 3: Cross multiply
    215,202.75x = 322,855.98 × 67,458.75
  4. Step 4: Simplify right side
    215,202.75x = 21,779,460,840.83
  5. Step 5: Solve for x
    x = 21,779,460,840.83/215,202.75
  6. Step 6: Final answer
    x = 101,204.38

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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.