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Finding the Fourth Proportional to 386,773.73, 533,815.94 and 243,578.69

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Solution

The fourth proportional to 386,773.73, 533,815.94 and 243,578.69 is: 336,181.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,773.73 : 533,815.94 = 243,578.69 : x
  2. Step 2: Convert to fraction form
    386,773.73/533,815.94 = 243,578.69/x
  3. Step 3: Cross multiply
    386,773.73x = 533,815.94 × 243,578.69
  4. Step 4: Simplify right side
    386,773.73x = 130,026,187,366.32
  5. Step 5: Solve for x
    x = 130,026,187,366.32/386,773.73
  6. Step 6: Final answer
    x = 336,181.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.