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Finding the Fourth Proportional to 238,471.28, 357,484.56 and 80,589.32

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Solution

The fourth proportional to 238,471.28, 357,484.56 and 80,589.32 is: 120,808.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,471.28 : 357,484.56 = 80,589.32 : x
  2. Step 2: Convert to fraction form
    238,471.28/357,484.56 = 80,589.32/x
  3. Step 3: Cross multiply
    238,471.28x = 357,484.56 × 80,589.32
  4. Step 4: Simplify right side
    238,471.28x = 28,809,435,813.48
  5. Step 5: Solve for x
    x = 28,809,435,813.48/238,471.28
  6. Step 6: Final answer
    x = 120,808.83

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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.