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Finding the Fourth Proportional to 255,710.76, 352,882.44 and 142,540.80

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Solution

The fourth proportional to 255,710.76, 352,882.44 and 142,540.80 is: 196,707.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,710.76 : 352,882.44 = 142,540.80 : x
  2. Step 2: Convert to fraction form
    255,710.76/352,882.44 = 142,540.80/x
  3. Step 3: Cross multiply
    255,710.76x = 352,882.44 × 142,540.80
  4. Step 4: Simplify right side
    255,710.76x = 50,300,145,303.55
  5. Step 5: Solve for x
    x = 50,300,145,303.55/255,710.76
  6. Step 6: Final answer
    x = 196,707.19

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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.