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Finding the Fourth Proportional to 203,458.88, 305,130 and 61,317.92

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Solution

The fourth proportional to 203,458.88, 305,130 and 61,317.92 is: 91,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,458.88 : 305,130 = 61,317.92 : x
  2. Step 2: Convert to fraction form
    203,458.88/305,130 = 61,317.92/x
  3. Step 3: Cross multiply
    203,458.88x = 305,130 × 61,317.92
  4. Step 4: Simplify right side
    203,458.88x = 18,709,936,929.60
  5. Step 5: Solve for x
    x = 18,709,936,929.60/203,458.88
  6. Step 6: Final answer
    x = 91,959.30

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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.