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Finding the Fourth Proportional to 256,867.44, 354,490.84 and 143,683.44

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Solution

The fourth proportional to 256,867.44, 354,490.84 and 143,683.44 is: 198,290.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,867.44 : 354,490.84 = 143,683.44 : x
  2. Step 2: Convert to fraction form
    256,867.44/354,490.84 = 143,683.44/x
  3. Step 3: Cross multiply
    256,867.44x = 354,490.84 × 143,683.44
  4. Step 4: Simplify right side
    256,867.44x = 50,934,463,339.69
  5. Step 5: Solve for x
    x = 50,934,463,339.69/256,867.44
  6. Step 6: Final answer
    x = 198,290.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.