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Finding the Fourth Proportional to 256,119.60, 384,179.40 and 108,356.40

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Solution

The fourth proportional to 256,119.60, 384,179.40 and 108,356.40 is: 162,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,119.60 : 384,179.40 = 108,356.40 : x
  2. Step 2: Convert to fraction form
    256,119.60/384,179.40 = 108,356.40/x
  3. Step 3: Cross multiply
    256,119.60x = 384,179.40 × 108,356.40
  4. Step 4: Simplify right side
    256,119.60x = 41,628,296,738.16
  5. Step 5: Solve for x
    x = 41,628,296,738.16/256,119.60
  6. Step 6: Final answer
    x = 162,534.60

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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.