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Finding the Fourth Proportional to 264,380.40, 396,570.60 and 86,844.60

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Solution

The fourth proportional to 264,380.40, 396,570.60 and 86,844.60 is: 130,266.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,380.40 : 396,570.60 = 86,844.60 : x
  2. Step 2: Convert to fraction form
    264,380.40/396,570.60 = 86,844.60/x
  3. Step 3: Cross multiply
    264,380.40x = 396,570.60 × 86,844.60
  4. Step 4: Simplify right side
    264,380.40x = 34,440,015,128.76
  5. Step 5: Solve for x
    x = 34,440,015,128.76/264,380.40
  6. Step 6: Final answer
    x = 130,266.90

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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.