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Finding the Fourth Proportional to 328,875.70, 493,257.91 and 92,163.90

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Solution

The fourth proportional to 328,875.70, 493,257.91 and 92,163.90 is: 138,230.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,875.70 : 493,257.91 = 92,163.90 : x
  2. Step 2: Convert to fraction form
    328,875.70/493,257.91 = 92,163.90/x
  3. Step 3: Cross multiply
    328,875.70x = 493,257.91 × 92,163.90
  4. Step 4: Simplify right side
    328,875.70x = 45,460,572,691.45
  5. Step 5: Solve for x
    x = 45,460,572,691.45/328,875.70
  6. Step 6: Final answer
    x = 138,230.26

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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.