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Finding the Fourth Proportional to 420,633.39, 580,540.73 and 267,511.94

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Solution

The fourth proportional to 420,633.39, 580,540.73 and 267,511.94 is: 369,208.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,633.39 : 580,540.73 = 267,511.94 : x
  2. Step 2: Convert to fraction form
    420,633.39/580,540.73 = 267,511.94/x
  3. Step 3: Cross multiply
    420,633.39x = 580,540.73 × 267,511.94
  4. Step 4: Simplify right side
    420,633.39x = 155,301,572,691.05
  5. Step 5: Solve for x
    x = 155,301,572,691.05/420,633.39
  6. Step 6: Final answer
    x = 369,208.86

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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.