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Finding the Fourth Proportional to 422,616.31, 583,027.22 and 279,575.57

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Solution

The fourth proportional to 422,616.31, 583,027.22 and 279,575.57 is: 385,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,616.31 : 583,027.22 = 279,575.57 : x
  2. Step 2: Convert to fraction form
    422,616.31/583,027.22 = 279,575.57/x
  3. Step 3: Cross multiply
    422,616.31x = 583,027.22 × 279,575.57
  4. Step 4: Simplify right side
    422,616.31x = 163,000,169,513.52
  5. Step 5: Solve for x
    x = 163,000,169,513.52/422,616.31
  6. Step 6: Final answer
    x = 385,693.04

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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.