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Finding the Fourth Proportional to 422,259.75, 582,720.01 and 228,667.55

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Solution

The fourth proportional to 422,259.75, 582,720.01 and 228,667.55 is: 315,562.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,259.75 : 582,720.01 = 228,667.55 : x
  2. Step 2: Convert to fraction form
    422,259.75/582,720.01 = 228,667.55/x
  3. Step 3: Cross multiply
    422,259.75x = 582,720.01 × 228,667.55
  4. Step 4: Simplify right side
    422,259.75x = 133,249,153,537.41
  5. Step 5: Solve for x
    x = 133,249,153,537.41/422,259.75
  6. Step 6: Final answer
    x = 315,562.05

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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.