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Finding the Fourth Proportional to 279,076.56, 385,117.60 and 158,229.12

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Solution

The fourth proportional to 279,076.56, 385,117.60 and 158,229.12 is: 218,351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,076.56 : 385,117.60 = 158,229.12 : x
  2. Step 2: Convert to fraction form
    279,076.56/385,117.60 = 158,229.12/x
  3. Step 3: Cross multiply
    279,076.56x = 385,117.60 × 158,229.12
  4. Step 4: Simplify right side
    279,076.56x = 60,936,818,944.51
  5. Step 5: Solve for x
    x = 60,936,818,944.51/279,076.56
  6. Step 6: Final answer
    x = 218,351.62

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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.