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Finding the Fourth Proportional to 400,096.64, 600,128.64 and 100,579.20

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Solution

The fourth proportional to 400,096.64, 600,128.64 and 100,579.20 is: 150,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,096.64 : 600,128.64 = 100,579.20 : x
  2. Step 2: Convert to fraction form
    400,096.64/600,128.64 = 100,579.20/x
  3. Step 3: Cross multiply
    400,096.64x = 600,128.64 × 100,579.20
  4. Step 4: Simplify right side
    400,096.64x = 60,360,458,508.29
  5. Step 5: Solve for x
    x = 60,360,458,508.29/400,096.64
  6. Step 6: Final answer
    x = 150,864.70

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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.