Home / 215,904.60-323,881.20-66,143.70

Finding the Fourth Proportional to 215,904.60, 323,881.20 and 66,143.70

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Solution

The fourth proportional to 215,904.60, 323,881.20 and 66,143.70 is: 99,222.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,904.60 : 323,881.20 = 66,143.70 : x
  2. Step 2: Convert to fraction form
    215,904.60/323,881.20 = 66,143.70/x
  3. Step 3: Cross multiply
    215,904.60x = 323,881.20 × 66,143.70
  4. Step 4: Simplify right side
    215,904.60x = 21,422,700,928.44
  5. Step 5: Solve for x
    x = 21,422,700,928.44/215,904.60
  6. Step 6: Final answer
    x = 99,222.99

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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.