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Finding the Fourth Proportional to 230,994.36, 318,751.44 and 129,005.68

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Solution

The fourth proportional to 230,994.36, 318,751.44 and 129,005.68 is: 178,016.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,994.36 : 318,751.44 = 129,005.68 : x
  2. Step 2: Convert to fraction form
    230,994.36/318,751.44 = 129,005.68/x
  3. Step 3: Cross multiply
    230,994.36x = 318,751.44 × 129,005.68
  4. Step 4: Simplify right side
    230,994.36x = 41,120,746,268.18
  5. Step 5: Solve for x
    x = 41,120,746,268.18/230,994.36
  6. Step 6: Final answer
    x = 178,016.23

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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.