Home / 230,256.03-317,764.31-128,288.37

Finding the Fourth Proportional to 230,256.03, 317,764.31 and 128,288.37

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Solution

The fourth proportional to 230,256.03, 317,764.31 and 128,288.37 is: 177,044.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,256.03 : 317,764.31 = 128,288.37 : x
  2. Step 2: Convert to fraction form
    230,256.03/317,764.31 = 128,288.37/x
  3. Step 3: Cross multiply
    230,256.03x = 317,764.31 × 128,288.37
  4. Step 4: Simplify right side
    230,256.03x = 40,765,464,732.63
  5. Step 5: Solve for x
    x = 40,765,464,732.63/230,256.03
  6. Step 6: Final answer
    x = 177,044.07

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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.