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Finding the Fourth Proportional to 230,687.36, 318,348.64 and 130,085.36

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Solution

The fourth proportional to 230,687.36, 318,348.64 and 130,085.36 is: 179,517.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,687.36 : 318,348.64 = 130,085.36 : x
  2. Step 2: Convert to fraction form
    230,687.36/318,348.64 = 130,085.36/x
  3. Step 3: Cross multiply
    230,687.36x = 318,348.64 × 130,085.36
  4. Step 4: Simplify right side
    230,687.36x = 41,412,497,439.91
  5. Step 5: Solve for x
    x = 41,412,497,439.91/230,687.36
  6. Step 6: Final answer
    x = 179,517.84

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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.