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Finding the Fourth Proportional to 356,107.36, 534,213.82 and 103,389.92

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Solution

The fourth proportional to 356,107.36, 534,213.82 and 103,389.92 is: 155,100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,107.36 : 534,213.82 = 103,389.92 : x
  2. Step 2: Convert to fraction form
    356,107.36/534,213.82 = 103,389.92/x
  3. Step 3: Cross multiply
    356,107.36x = 534,213.82 × 103,389.92
  4. Step 4: Simplify right side
    356,107.36x = 55,232,324,112.69
  5. Step 5: Solve for x
    x = 55,232,324,112.69/356,107.36
  6. Step 6: Final answer
    x = 155,100.20

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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.