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Finding the Fourth Proportional to 405,943.88, 608,974.14 and 125,483

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Solution

The fourth proportional to 405,943.88, 608,974.14 and 125,483 is: 188,242.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,943.88 : 608,974.14 = 125,483 : x
  2. Step 2: Convert to fraction form
    405,943.88/608,974.14 = 125,483/x
  3. Step 3: Cross multiply
    405,943.88x = 608,974.14 × 125,483
  4. Step 4: Simplify right side
    405,943.88x = 76,415,902,009.62
  5. Step 5: Solve for x
    x = 76,415,902,009.62/405,943.88
  6. Step 6: Final answer
    x = 188,242.53

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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.