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Finding the Fourth Proportional to 347,906, 521,859 and 85,250

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Solution

The fourth proportional to 347,906, 521,859 and 85,250 is: 127,875

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,906 : 521,859 = 85,250 : x
  2. Step 2: Convert to fraction form
    347,906/521,859 = 85,250/x
  3. Step 3: Cross multiply
    347,906x = 521,859 × 85,250
  4. Step 4: Simplify right side
    347,906x = 44,488,479,750
  5. Step 5: Solve for x
    x = 44,488,479,750/347,906
  6. Step 6: Final answer
    x = 127,875

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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.