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Finding the Fourth Proportional to 230,355.90, 317,878.29 and 126,986.76

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Solution

The fourth proportional to 230,355.90, 317,878.29 and 126,986.76 is: 175,234.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,355.90 : 317,878.29 = 126,986.76 : x
  2. Step 2: Convert to fraction form
    230,355.90/317,878.29 = 126,986.76/x
  3. Step 3: Cross multiply
    230,355.90x = 317,878.29 × 126,986.76
  4. Step 4: Simplify right side
    230,355.90x = 40,366,334,121.44
  5. Step 5: Solve for x
    x = 40,366,334,121.44/230,355.90
  6. Step 6: Final answer
    x = 175,234.64

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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.