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Finding the Fourth Proportional to 255,969.12, 353,245.08 and 142,789.44

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Solution

The fourth proportional to 255,969.12, 353,245.08 and 142,789.44 is: 197,053.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,969.12 : 353,245.08 = 142,789.44 : x
  2. Step 2: Convert to fraction form
    255,969.12/353,245.08 = 142,789.44/x
  3. Step 3: Cross multiply
    255,969.12x = 353,245.08 × 142,789.44
  4. Step 4: Simplify right side
    255,969.12x = 50,439,667,155.96
  5. Step 5: Solve for x
    x = 50,439,667,155.96/255,969.12
  6. Step 6: Final answer
    x = 197,053.72

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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.