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Finding the Fourth Proportional to 306,999.45, 423,672.32 and 171,033.32

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Solution

The fourth proportional to 306,999.45, 423,672.32 and 171,033.32 is: 236,033.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,999.45 : 423,672.32 = 171,033.32 : x
  2. Step 2: Convert to fraction form
    306,999.45/423,672.32 = 171,033.32/x
  3. Step 3: Cross multiply
    306,999.45x = 423,672.32 × 171,033.32
  4. Step 4: Simplify right side
    306,999.45x = 72,462,083,481.70
  5. Step 5: Solve for x
    x = 72,462,083,481.70/306,999.45
  6. Step 6: Final answer
    x = 236,033.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.