Home / 257,970.22-386,778.70-131,365.40

Finding the Fourth Proportional to 257,970.22, 386,778.70 and 131,365.40

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Solution

The fourth proportional to 257,970.22, 386,778.70 and 131,365.40 is: 196,958.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,970.22 : 386,778.70 = 131,365.40 : x
  2. Step 2: Convert to fraction form
    257,970.22/386,778.70 = 131,365.40/x
  3. Step 3: Cross multiply
    257,970.22x = 386,778.70 × 131,365.40
  4. Step 4: Simplify right side
    257,970.22x = 50,809,336,128.36
  5. Step 5: Solve for x
    x = 50,809,336,128.36/257,970.22
  6. Step 6: Final answer
    x = 196,958.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.