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Finding the Fourth Proportional to 268,090.60, 402,107.10 and 71,098.60

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Solution

The fourth proportional to 268,090.60, 402,107.10 and 71,098.60 is: 106,640.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,090.60 : 402,107.10 = 71,098.60 : x
  2. Step 2: Convert to fraction form
    268,090.60/402,107.10 = 71,098.60/x
  3. Step 3: Cross multiply
    268,090.60x = 402,107.10 × 71,098.60
  4. Step 4: Simplify right side
    268,090.60x = 28,589,251,860.06
  5. Step 5: Solve for x
    x = 28,589,251,860.06/268,090.60
  6. Step 6: Final answer
    x = 106,640.26

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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.