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Finding the Fourth Proportional to 255,686.76, 352,863.54 and 140,964.84

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Solution

The fourth proportional to 255,686.76, 352,863.54 and 140,964.84 is: 194,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,686.76 : 352,863.54 = 140,964.84 : x
  2. Step 2: Convert to fraction form
    255,686.76/352,863.54 = 140,964.84/x
  3. Step 3: Cross multiply
    255,686.76x = 352,863.54 × 140,964.84
  4. Step 4: Simplify right side
    255,686.76x = 49,741,352,457.93
  5. Step 5: Solve for x
    x = 49,741,352,457.93/255,686.76
  6. Step 6: Final answer
    x = 194,540.20

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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.