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Finding the Fourth Proportional to 254,504.25, 381,587.90 and 121,405.05

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Solution

The fourth proportional to 254,504.25, 381,587.90 and 121,405.05 is: 182,027.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,504.25 : 381,587.90 = 121,405.05 : x
  2. Step 2: Convert to fraction form
    254,504.25/381,587.90 = 121,405.05/x
  3. Step 3: Cross multiply
    254,504.25x = 381,587.90 × 121,405.05
  4. Step 4: Simplify right side
    254,504.25x = 46,326,697,471.87
  5. Step 5: Solve for x
    x = 46,326,697,471.87/254,504.25
  6. Step 6: Final answer
    x = 182,027.21

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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.