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Finding the Fourth Proportional to 361,643.20, 542,464.75 and 121,736.95

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Solution

The fourth proportional to 361,643.20, 542,464.75 and 121,736.95 is: 182,605.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,643.20 : 542,464.75 = 121,736.95 : x
  2. Step 2: Convert to fraction form
    361,643.20/542,464.75 = 121,736.95/x
  3. Step 3: Cross multiply
    361,643.20x = 542,464.75 × 121,736.95
  4. Step 4: Simplify right side
    361,643.20x = 66,038,004,147.51
  5. Step 5: Solve for x
    x = 66,038,004,147.51/361,643.20
  6. Step 6: Final answer
    x = 182,605.41

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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.