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Finding the Fourth Proportional to 422,654.32, 583,277.28 and 231,667.72

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Solution

The fourth proportional to 422,654.32, 583,277.28 and 231,667.72 is: 319,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,654.32 : 583,277.28 = 231,667.72 : x
  2. Step 2: Convert to fraction form
    422,654.32/583,277.28 = 231,667.72/x
  3. Step 3: Cross multiply
    422,654.32x = 583,277.28 × 231,667.72
  4. Step 4: Simplify right side
    422,654.32x = 135,126,517,585.40
  5. Step 5: Solve for x
    x = 135,126,517,585.40/422,654.32
  6. Step 6: Final answer
    x = 319,709.30

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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.