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Finding the Fourth Proportional to 298,610.36, 447,912.79 and 121,075.17

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Solution

The fourth proportional to 298,610.36, 447,912.79 and 121,075.17 is: 181,611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,610.36 : 447,912.79 = 121,075.17 : x
  2. Step 2: Convert to fraction form
    298,610.36/447,912.79 = 121,075.17/x
  3. Step 3: Cross multiply
    298,610.36x = 447,912.79 × 121,075.17
  4. Step 4: Simplify right side
    298,610.36x = 54,231,117,194.42
  5. Step 5: Solve for x
    x = 54,231,117,194.42/298,610.36
  6. Step 6: Final answer
    x = 181,611.64

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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.