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Finding the Fourth Proportional to 265,310.40, 397,431.54 and 122,955.60

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Solution

The fourth proportional to 265,310.40, 397,431.54 and 122,955.60 is: 184,185.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,310.40 : 397,431.54 = 122,955.60 : x
  2. Step 2: Convert to fraction form
    265,310.40/397,431.54 = 122,955.60/x
  3. Step 3: Cross multiply
    265,310.40x = 397,431.54 × 122,955.60
  4. Step 4: Simplify right side
    265,310.40x = 48,866,433,459.62
  5. Step 5: Solve for x
    x = 48,866,433,459.62/265,310.40
  6. Step 6: Final answer
    x = 184,185.89

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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.