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Finding the Fourth Proportional to 255,655.44, 352,816.56 and 142,479

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Solution

The fourth proportional to 255,655.44, 352,816.56 and 142,479 is: 196,627.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,655.44 : 352,816.56 = 142,479 : x
  2. Step 2: Convert to fraction form
    255,655.44/352,816.56 = 142,479/x
  3. Step 3: Cross multiply
    255,655.44x = 352,816.56 × 142,479
  4. Step 4: Simplify right side
    255,655.44x = 50,268,950,652.24
  5. Step 5: Solve for x
    x = 50,268,950,652.24/255,655.44
  6. Step 6: Final answer
    x = 196,627.74

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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.