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Finding the Fourth Proportional to 255,016.54, 351,917.92 and 140,288.48

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Solution

The fourth proportional to 255,016.54, 351,917.92 and 140,288.48 is: 193,595.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,016.54 : 351,917.92 = 140,288.48 : x
  2. Step 2: Convert to fraction form
    255,016.54/351,917.92 = 140,288.48/x
  3. Step 3: Cross multiply
    255,016.54x = 351,917.92 × 140,288.48
  4. Step 4: Simplify right side
    255,016.54x = 49,370,030,081.56
  5. Step 5: Solve for x
    x = 49,370,030,081.56/255,016.54
  6. Step 6: Final answer
    x = 193,595.40

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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.