Home / 230,768.41-318,476.40-128,813.71

Finding the Fourth Proportional to 230,768.41, 318,476.40 and 128,813.71

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Solution

The fourth proportional to 230,768.41, 318,476.40 and 128,813.71 is: 177,771.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,768.41 : 318,476.40 = 128,813.71 : x
  2. Step 2: Convert to fraction form
    230,768.41/318,476.40 = 128,813.71/x
  3. Step 3: Cross multiply
    230,768.41x = 318,476.40 × 128,813.71
  4. Step 4: Simplify right side
    230,768.41x = 41,024,126,631.44
  5. Step 5: Solve for x
    x = 41,024,126,631.44/230,768.41
  6. Step 6: Final answer
    x = 177,771.85

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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.