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Finding the Fourth Proportional to 270,157.76, 405,236.63 and 103,906.88

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Solution

The fourth proportional to 270,157.76, 405,236.63 and 103,906.88 is: 155,860.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,157.76 : 405,236.63 = 103,906.88 : x
  2. Step 2: Convert to fraction form
    270,157.76/405,236.63 = 103,906.88/x
  3. Step 3: Cross multiply
    270,157.76x = 405,236.63 × 103,906.88
  4. Step 4: Simplify right side
    270,157.76x = 42,106,872,118.60
  5. Step 5: Solve for x
    x = 42,106,872,118.60/270,157.76
  6. Step 6: Final answer
    x = 155,860.31

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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.