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Finding the Fourth Proportional to 231,924.56, 320,051.72 and 129,949.60

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Solution

The fourth proportional to 231,924.56, 320,051.72 and 129,949.60 is: 179,328.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,924.56 : 320,051.72 = 129,949.60 : x
  2. Step 2: Convert to fraction form
    231,924.56/320,051.72 = 129,949.60/x
  3. Step 3: Cross multiply
    231,924.56x = 320,051.72 × 129,949.60
  4. Step 4: Simplify right side
    231,924.56x = 41,590,592,993.31
  5. Step 5: Solve for x
    x = 41,590,592,993.31/231,924.56
  6. Step 6: Final answer
    x = 179,328.11

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1.5x scale

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.