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Finding the Fourth Proportional to 631,537.36, 871,495.95 and 345,067.36

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Solution

The fourth proportional to 631,537.36, 871,495.95 and 345,067.36 is: 476,178.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,537.36 : 871,495.95 = 345,067.36 : x
  2. Step 2: Convert to fraction form
    631,537.36/871,495.95 = 345,067.36/x
  3. Step 3: Cross multiply
    631,537.36x = 871,495.95 × 345,067.36
  4. Step 4: Simplify right side
    631,537.36x = 300,724,806,717.19
  5. Step 5: Solve for x
    x = 300,724,806,717.19/631,537.36
  6. Step 6: Final answer
    x = 476,178.97

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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.