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Finding the Fourth Proportional to 485,829.02, 670,447.26 and 270,983

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Solution

The fourth proportional to 485,829.02, 670,447.26 and 270,983 is: 373,958.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,829.02 : 670,447.26 = 270,983 : x
  2. Step 2: Convert to fraction form
    485,829.02/670,447.26 = 270,983/x
  3. Step 3: Cross multiply
    485,829.02x = 670,447.26 × 270,983
  4. Step 4: Simplify right side
    485,829.02x = 181,679,809,856.58
  5. Step 5: Solve for x
    x = 181,679,809,856.58/485,829.02
  6. Step 6: Final answer
    x = 373,958.33

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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.