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Finding the Fourth Proportional to 279,832.56, 386,157.69 and 152,505.42

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Solution

The fourth proportional to 279,832.56, 386,157.69 and 152,505.42 is: 210,451.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,832.56 : 386,157.69 = 152,505.42 : x
  2. Step 2: Convert to fraction form
    279,832.56/386,157.69 = 152,505.42/x
  3. Step 3: Cross multiply
    279,832.56x = 386,157.69 × 152,505.42
  4. Step 4: Simplify right side
    279,832.56x = 58,891,140,699.68
  5. Step 5: Solve for x
    x = 58,891,140,699.68/279,832.56
  6. Step 6: Final answer
    x = 210,451.35

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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.