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Finding the Fourth Proportional to 405,476.43, 608,464.79 and 205,940.03

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Solution

The fourth proportional to 405,476.43, 608,464.79 and 205,940.03 is: 309,037.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,476.43 : 608,464.79 = 205,940.03 : x
  2. Step 2: Convert to fraction form
    405,476.43/608,464.79 = 205,940.03/x
  3. Step 3: Cross multiply
    405,476.43x = 608,464.79 × 205,940.03
  4. Step 4: Simplify right side
    405,476.43x = 125,307,253,034.52
  5. Step 5: Solve for x
    x = 125,307,253,034.52/405,476.43
  6. Step 6: Final answer
    x = 309,037.08

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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.