Home / 231,786.09-319,853.75-142,344.81

Finding the Fourth Proportional to 231,786.09, 319,853.75 and 142,344.81

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Solution

The fourth proportional to 231,786.09, 319,853.75 and 142,344.81 is: 196,429.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,786.09 : 319,853.75 = 142,344.81 : x
  2. Step 2: Convert to fraction form
    231,786.09/319,853.75 = 142,344.81/x
  3. Step 3: Cross multiply
    231,786.09x = 319,853.75 × 142,344.81
  4. Step 4: Simplify right side
    231,786.09x = 45,529,520,559.81
  5. Step 5: Solve for x
    x = 45,529,520,559.81/231,786.09
  6. Step 6: Final answer
    x = 196,429.05

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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.