Home / 230,334.21-317,861.52-128,357.43

Finding the Fourth Proportional to 230,334.21, 317,861.52 and 128,357.43

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Solution

The fourth proportional to 230,334.21, 317,861.52 and 128,357.43 is: 177,133.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,334.21 : 317,861.52 = 128,357.43 : x
  2. Step 2: Convert to fraction form
    230,334.21/317,861.52 = 128,357.43/x
  3. Step 3: Cross multiply
    230,334.21x = 317,861.52 × 128,357.43
  4. Step 4: Simplify right side
    230,334.21x = 40,799,888,811.73
  5. Step 5: Solve for x
    x = 40,799,888,811.73/230,334.21
  6. Step 6: Final answer
    x = 177,133.43

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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.