Home / 230,256.60-317,770.38-128,288.76

Finding the Fourth Proportional to 230,256.60, 317,770.38 and 128,288.76

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Solution

The fourth proportional to 230,256.60, 317,770.38 and 128,288.76 is: 177,047.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,256.60 : 317,770.38 = 128,288.76 : x
  2. Step 2: Convert to fraction form
    230,256.60/317,770.38 = 128,288.76/x
  3. Step 3: Cross multiply
    230,256.60x = 317,770.38 × 128,288.76
  4. Step 4: Simplify right side
    230,256.60x = 40,766,368,014.93
  5. Step 5: Solve for x
    x = 40,766,368,014.93/230,256.60
  6. Step 6: Final answer
    x = 177,047.55

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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.