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Finding the Fourth Proportional to 255,422.48, 352,479.84 and 140,698.76

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Solution

The fourth proportional to 255,422.48, 352,479.84 and 140,698.76 is: 194,162.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,422.48 : 352,479.84 = 140,698.76 : x
  2. Step 2: Convert to fraction form
    255,422.48/352,479.84 = 140,698.76/x
  3. Step 3: Cross multiply
    255,422.48x = 352,479.84 × 140,698.76
  4. Step 4: Simplify right side
    255,422.48x = 49,593,476,413.00
  5. Step 5: Solve for x
    x = 49,593,476,413.00/255,422.48
  6. Step 6: Final answer
    x = 194,162.54

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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.