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Finding the Fourth Proportional to 215,219, 322,880.34 and 67,475

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Solution

The fourth proportional to 215,219, 322,880.34 and 67,475 is: 101,228.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,219 : 322,880.34 = 67,475 : x
  2. Step 2: Convert to fraction form
    215,219/322,880.34 = 67,475/x
  3. Step 3: Cross multiply
    215,219x = 322,880.34 × 67,475
  4. Step 4: Simplify right side
    215,219x = 21,786,350,941.50
  5. Step 5: Solve for x
    x = 21,786,350,941.50/215,219
  6. Step 6: Final answer
    x = 101,228.75

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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.