Home / 238,640.40-329,319.18-131,209.38

Finding the Fourth Proportional to 238,640.40, 329,319.18 and 131,209.38

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Solution

The fourth proportional to 238,640.40, 329,319.18 and 131,209.38 is: 181,066.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,640.40 : 329,319.18 = 131,209.38 : x
  2. Step 2: Convert to fraction form
    238,640.40/329,319.18 = 131,209.38/x
  3. Step 3: Cross multiply
    238,640.40x = 329,319.18 × 131,209.38
  4. Step 4: Simplify right side
    238,640.40x = 43,209,765,429.91
  5. Step 5: Solve for x
    x = 43,209,765,429.91/238,640.40
  6. Step 6: Final answer
    x = 181,066.43

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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.