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Finding the Fourth Proportional to 255,456.60, 352,540.98 and 142,279.32

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Solution

The fourth proportional to 255,456.60, 352,540.98 and 142,279.32 is: 196,351.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,456.60 : 352,540.98 = 142,279.32 : x
  2. Step 2: Convert to fraction form
    255,456.60/352,540.98 = 142,279.32/x
  3. Step 3: Cross multiply
    255,456.60x = 352,540.98 × 142,279.32
  4. Step 4: Simplify right side
    255,456.60x = 50,159,290,906.53
  5. Step 5: Solve for x
    x = 50,159,290,906.53/255,456.60
  6. Step 6: Final answer
    x = 196,351.52

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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.