Home / 256,555.20-384,249.60-131,750.40

Finding the Fourth Proportional to 256,555.20, 384,249.60 and 131,750.40

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Solution

The fourth proportional to 256,555.20, 384,249.60 and 131,750.40 is: 197,326.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,555.20 : 384,249.60 = 131,750.40 : x
  2. Step 2: Convert to fraction form
    256,555.20/384,249.60 = 131,750.40/x
  3. Step 3: Cross multiply
    256,555.20x = 384,249.60 × 131,750.40
  4. Step 4: Simplify right side
    256,555.20x = 50,625,038,499.84
  5. Step 5: Solve for x
    x = 50,625,038,499.84/256,555.20
  6. Step 6: Final answer
    x = 197,326.11

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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.