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Finding the Fourth Proportional to 256,520.82, 384,682.68 and 106,831.74

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Solution

The fourth proportional to 256,520.82, 384,682.68 and 106,831.74 is: 160,206.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,520.82 : 384,682.68 = 106,831.74 : x
  2. Step 2: Convert to fraction form
    256,520.82/384,682.68 = 106,831.74/x
  3. Step 3: Cross multiply
    256,520.82x = 384,682.68 × 106,831.74
  4. Step 4: Simplify right side
    256,520.82x = 41,096,320,052.26
  5. Step 5: Solve for x
    x = 41,096,320,052.26/256,520.82
  6. Step 6: Final answer
    x = 160,206.57

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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.