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Finding the Fourth Proportional to 279,057.56, 385,096.76 and 151,733.20

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Solution

The fourth proportional to 279,057.56, 385,096.76 and 151,733.20 is: 209,390.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,057.56 : 385,096.76 = 151,733.20 : x
  2. Step 2: Convert to fraction form
    279,057.56/385,096.76 = 151,733.20/x
  3. Step 3: Cross multiply
    279,057.56x = 385,096.76 × 151,733.20
  4. Step 4: Simplify right side
    279,057.56x = 58,431,963,704.43
  5. Step 5: Solve for x
    x = 58,431,963,704.43/279,057.56
  6. Step 6: Final answer
    x = 209,390.36

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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.