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Finding the Fourth Proportional to 255,449.64, 352,531.44 and 142,272.39

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Solution

The fourth proportional to 255,449.64, 352,531.44 and 142,272.39 is: 196,341.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,449.64 : 352,531.44 = 142,272.39 : x
  2. Step 2: Convert to fraction form
    255,449.64/352,531.44 = 142,272.39/x
  3. Step 3: Cross multiply
    255,449.64x = 352,531.44 × 142,272.39
  4. Step 4: Simplify right side
    255,449.64x = 50,155,490,518.94
  5. Step 5: Solve for x
    x = 50,155,490,518.94/255,449.64
  6. Step 6: Final answer
    x = 196,341.99

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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.