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Finding the Fourth Proportional to 422,666.75, 583,280.25 and 231,681.44

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Solution

The fourth proportional to 422,666.75, 583,280.25 and 231,681.44 is: 319,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,666.75 : 583,280.25 = 231,681.44 : x
  2. Step 2: Convert to fraction form
    422,666.75/583,280.25 = 231,681.44/x
  3. Step 3: Cross multiply
    422,666.75x = 583,280.25 × 231,681.44
  4. Step 4: Simplify right side
    422,666.75x = 135,135,208,243.56
  5. Step 5: Solve for x
    x = 135,135,208,243.56/422,666.75
  6. Step 6: Final answer
    x = 319,720.46

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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.