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Finding the Fourth Proportional to 255,058.20, 382,149.90 and 121,651.20

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Solution

The fourth proportional to 255,058.20, 382,149.90 and 121,651.20 is: 182,268.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,058.20 : 382,149.90 = 121,651.20 : x
  2. Step 2: Convert to fraction form
    255,058.20/382,149.90 = 121,651.20/x
  3. Step 3: Cross multiply
    255,058.20x = 382,149.90 × 121,651.20
  4. Step 4: Simplify right side
    255,058.20x = 46,488,993,914.88
  5. Step 5: Solve for x
    x = 46,488,993,914.88/255,058.20
  6. Step 6: Final answer
    x = 182,268.18

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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.