Home / 256,031.20-384,046.80-131,292.64

Finding the Fourth Proportional to 256,031.20, 384,046.80 and 131,292.64

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Solution

The fourth proportional to 256,031.20, 384,046.80 and 131,292.64 is: 196,938.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,031.20 : 384,046.80 = 131,292.64 : x
  2. Step 2: Convert to fraction form
    256,031.20/384,046.80 = 131,292.64/x
  3. Step 3: Cross multiply
    256,031.20x = 384,046.80 × 131,292.64
  4. Step 4: Simplify right side
    256,031.20x = 50,422,518,255.55
  5. Step 5: Solve for x
    x = 50,422,518,255.55/256,031.20
  6. Step 6: Final answer
    x = 196,938.96

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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.