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Finding the Fourth Proportional to 227,580.70, 341,371.05 and 85,425.70

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Solution

The fourth proportional to 227,580.70, 341,371.05 and 85,425.70 is: 128,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,580.70 : 341,371.05 = 85,425.70 : x
  2. Step 2: Convert to fraction form
    227,580.70/341,371.05 = 85,425.70/x
  3. Step 3: Cross multiply
    227,580.70x = 341,371.05 × 85,425.70
  4. Step 4: Simplify right side
    227,580.70x = 29,161,860,905.99
  5. Step 5: Solve for x
    x = 29,161,860,905.99/227,580.70
  6. Step 6: Final answer
    x = 128,138.55

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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.