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Finding the Fourth Proportional to 227,655.66, 341,520.53 and 85,512

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Solution

The fourth proportional to 227,655.66, 341,520.53 and 85,512 is: 128,281.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,655.66 : 341,520.53 = 85,512 : x
  2. Step 2: Convert to fraction form
    227,655.66/341,520.53 = 85,512/x
  3. Step 3: Cross multiply
    227,655.66x = 341,520.53 × 85,512
  4. Step 4: Simplify right side
    227,655.66x = 29,204,103,133.80
  5. Step 5: Solve for x
    x = 29,204,103,133.80/227,655.66
  6. Step 6: Final answer
    x = 128,281.91

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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.