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Finding the Fourth Proportional to 279,011.64, 385,168.32 and 178,467.96

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Solution

The fourth proportional to 279,011.64, 385,168.32 and 178,467.96 is: 246,370.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,011.64 : 385,168.32 = 178,467.96 : x
  2. Step 2: Convert to fraction form
    279,011.64/385,168.32 = 178,467.96/x
  3. Step 3: Cross multiply
    279,011.64x = 385,168.32 × 178,467.96
  4. Step 4: Simplify right side
    279,011.64x = 68,740,204,327.03
  5. Step 5: Solve for x
    x = 68,740,204,327.03/279,011.64
  6. Step 6: Final answer
    x = 246,370.38

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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.