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Finding the Fourth Proportional to 328,879.70, 493,263.91 and 92,167.90

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Solution

The fourth proportional to 328,879.70, 493,263.91 and 92,167.90 is: 138,236.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,879.70 : 493,263.91 = 92,167.90 : x
  2. Step 2: Convert to fraction form
    328,879.70/493,263.91 = 92,167.90/x
  3. Step 3: Cross multiply
    328,879.70x = 493,263.91 × 92,167.90
  4. Step 4: Simplify right side
    328,879.70x = 45,463,098,730.49
  5. Step 5: Solve for x
    x = 45,463,098,730.49/328,879.70
  6. Step 6: Final answer
    x = 138,236.26

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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.