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Finding the Fourth Proportional to 230,781.75, 318,479.22 and 130,179.75

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Solution

The fourth proportional to 230,781.75, 318,479.22 and 130,179.75 is: 179,648.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,781.75 : 318,479.22 = 130,179.75 : x
  2. Step 2: Convert to fraction form
    230,781.75/318,479.22 = 130,179.75/x
  3. Step 3: Cross multiply
    230,781.75x = 318,479.22 × 130,179.75
  4. Step 4: Simplify right side
    230,781.75x = 41,459,545,239.80
  5. Step 5: Solve for x
    x = 41,459,545,239.80/230,781.75
  6. Step 6: Final answer
    x = 179,648.28

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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.