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Finding the Fourth Proportional to 203,571.18, 305,352.18 and 70,443.36

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Solution

The fourth proportional to 203,571.18, 305,352.18 and 70,443.36 is: 105,663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,571.18 : 305,352.18 = 70,443.36 : x
  2. Step 2: Convert to fraction form
    203,571.18/305,352.18 = 70,443.36/x
  3. Step 3: Cross multiply
    203,571.18x = 305,352.18 × 70,443.36
  4. Step 4: Simplify right side
    203,571.18x = 21,510,033,542.52
  5. Step 5: Solve for x
    x = 21,510,033,542.52/203,571.18
  6. Step 6: Final answer
    x = 105,663.45

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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.