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Finding the Fourth Proportional to 256,792.06, 354,369.90 and 142,079.05

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Solution

The fourth proportional to 256,792.06, 354,369.90 and 142,079.05 is: 196,067.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,792.06 : 354,369.90 = 142,079.05 : x
  2. Step 2: Convert to fraction form
    256,792.06/354,369.90 = 142,079.05/x
  3. Step 3: Cross multiply
    256,792.06x = 354,369.90 × 142,079.05
  4. Step 4: Simplify right side
    256,792.06x = 50,348,538,740.60
  5. Step 5: Solve for x
    x = 50,348,538,740.60/256,792.06
  6. Step 6: Final answer
    x = 196,067.35

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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.