Home / 215,914.08-323,880.84-66,143.48

Finding the Fourth Proportional to 215,914.08, 323,880.84 and 66,143.48

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Solution

The fourth proportional to 215,914.08, 323,880.84 and 66,143.48 is: 99,218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,914.08 : 323,880.84 = 66,143.48 : x
  2. Step 2: Convert to fraction form
    215,914.08/323,880.84 = 66,143.48/x
  3. Step 3: Cross multiply
    215,914.08x = 323,880.84 × 66,143.48
  4. Step 4: Simplify right side
    215,914.08x = 21,422,605,862.92
  5. Step 5: Solve for x
    x = 21,422,605,862.92/215,914.08
  6. Step 6: Final answer
    x = 99,218.20

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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.