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Finding the Fourth Proportional to 420,367.25, 630,533.22 and 195,650.39

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Solution

The fourth proportional to 420,367.25, 630,533.22 and 195,650.39 is: 293,467.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,367.25 : 630,533.22 = 195,650.39 : x
  2. Step 2: Convert to fraction form
    420,367.25/630,533.22 = 195,650.39/x
  3. Step 3: Cross multiply
    420,367.25x = 630,533.22 × 195,650.39
  4. Step 4: Simplify right side
    420,367.25x = 123,364,067,248.29
  5. Step 5: Solve for x
    x = 123,364,067,248.29/420,367.25
  6. Step 6: Final answer
    x = 293,467.36

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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.