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Finding the Fourth Proportional to 230,590.80, 318,261.96 and 135,179.28

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Solution

The fourth proportional to 230,590.80, 318,261.96 and 135,179.28 is: 186,574.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,590.80 : 318,261.96 = 135,179.28 : x
  2. Step 2: Convert to fraction form
    230,590.80/318,261.96 = 135,179.28/x
  3. Step 3: Cross multiply
    230,590.80x = 318,261.96 × 135,179.28
  4. Step 4: Simplify right side
    230,590.80x = 43,022,422,604.19
  5. Step 5: Solve for x
    x = 43,022,422,604.19/230,590.80
  6. Step 6: Final answer
    x = 186,574.76

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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.