Home / 230,261.85-317,739.65-128,276.91

Finding the Fourth Proportional to 230,261.85, 317,739.65 and 128,276.91

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Solution

The fourth proportional to 230,261.85, 317,739.65 and 128,276.91 is: 177,010.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,261.85 : 317,739.65 = 128,276.91 : x
  2. Step 2: Convert to fraction form
    230,261.85/317,739.65 = 128,276.91/x
  3. Step 3: Cross multiply
    230,261.85x = 317,739.65 × 128,276.91
  4. Step 4: Simplify right side
    230,261.85x = 40,758,659,845.10
  5. Step 5: Solve for x
    x = 40,758,659,845.10/230,261.85
  6. Step 6: Final answer
    x = 177,010.04

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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.