Home / 256,124.07-384,231.20-87,604.83

Finding the Fourth Proportional to 256,124.07, 384,231.20 and 87,604.83

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Solution

The fourth proportional to 256,124.07, 384,231.20 and 87,604.83 is: 131,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,124.07 : 384,231.20 = 87,604.83 : x
  2. Step 2: Convert to fraction form
    256,124.07/384,231.20 = 87,604.83/x
  3. Step 3: Cross multiply
    256,124.07x = 384,231.20 × 87,604.83
  4. Step 4: Simplify right side
    256,124.07x = 33,660,508,518.67
  5. Step 5: Solve for x
    x = 33,660,508,518.67/256,124.07
  6. Step 6: Final answer
    x = 131,422.67

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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.