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Finding the Fourth Proportional to 255,430.95, 352,480.86 and 140,687.27

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Solution

The fourth proportional to 255,430.95, 352,480.86 and 140,687.27 is: 194,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,430.95 : 352,480.86 = 140,687.27 : x
  2. Step 2: Convert to fraction form
    255,430.95/352,480.86 = 140,687.27/x
  3. Step 3: Cross multiply
    255,430.95x = 352,480.86 × 140,687.27
  4. Step 4: Simplify right side
    255,430.95x = 49,589,568,158.25
  5. Step 5: Solve for x
    x = 49,589,568,158.25/255,430.95
  6. Step 6: Final answer
    x = 194,140.80

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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.