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Finding the Fourth Proportional to 231,656.60, 347,193.30 and 205,412.60

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Solution

The fourth proportional to 231,656.60, 347,193.30 and 205,412.60 is: 307,860.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,656.60 : 347,193.30 = 205,412.60 : x
  2. Step 2: Convert to fraction form
    231,656.60/347,193.30 = 205,412.60/x
  3. Step 3: Cross multiply
    231,656.60x = 347,193.30 × 205,412.60
  4. Step 4: Simplify right side
    231,656.60x = 71,317,878,455.58
  5. Step 5: Solve for x
    x = 71,317,878,455.58/231,656.60
  6. Step 6: Final answer
    x = 307,860.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.