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Finding the Fourth Proportional to 553,369.82, 763,640.03 and 301,625.51

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Solution

The fourth proportional to 553,369.82, 763,640.03 and 301,625.51 is: 416,237.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,369.82 : 763,640.03 = 301,625.51 : x
  2. Step 2: Convert to fraction form
    553,369.82/763,640.03 = 301,625.51/x
  3. Step 3: Cross multiply
    553,369.82x = 763,640.03 × 301,625.51
  4. Step 4: Simplify right side
    553,369.82x = 230,333,313,906.14
  5. Step 5: Solve for x
    x = 230,333,313,906.14/553,369.82
  6. Step 6: Final answer
    x = 416,237.58

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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.