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Finding the Fourth Proportional to 216,790.89, 325,317.54 and 92,131.89

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Solution

The fourth proportional to 216,790.89, 325,317.54 and 92,131.89 is: 138,253.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,790.89 : 325,317.54 = 92,131.89 : x
  2. Step 2: Convert to fraction form
    216,790.89/325,317.54 = 92,131.89/x
  3. Step 3: Cross multiply
    216,790.89x = 325,317.54 × 92,131.89
  4. Step 4: Simplify right side
    216,790.89x = 29,972,119,810.35
  5. Step 5: Solve for x
    x = 29,972,119,810.35/216,790.89
  6. Step 6: Final answer
    x = 138,253.59

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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.