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Finding the Fourth Proportional to 368,903.44, 509,105.70 and 225,618.52

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Solution

The fourth proportional to 368,903.44, 509,105.70 and 225,618.52 is: 311,365.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,903.44 : 509,105.70 = 225,618.52 : x
  2. Step 2: Convert to fraction form
    368,903.44/509,105.70 = 225,618.52/x
  3. Step 3: Cross multiply
    368,903.44x = 509,105.70 × 225,618.52
  4. Step 4: Simplify right side
    368,903.44x = 114,863,674,557.56
  5. Step 5: Solve for x
    x = 114,863,674,557.56/368,903.44
  6. Step 6: Final answer
    x = 311,365.15

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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.