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Finding the Fourth Proportional to 422,787.36, 583,446.72 and 231,796.80

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Solution

The fourth proportional to 422,787.36, 583,446.72 and 231,796.80 is: 319,879.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,787.36 : 583,446.72 = 231,796.80 : x
  2. Step 2: Convert to fraction form
    422,787.36/583,446.72 = 231,796.80/x
  3. Step 3: Cross multiply
    422,787.36x = 583,446.72 × 231,796.80
  4. Step 4: Simplify right side
    422,787.36x = 135,241,082,666.50
  5. Step 5: Solve for x
    x = 135,241,082,666.50/422,787.36
  6. Step 6: Final answer
    x = 319,879.67

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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.