Home / 647,942.49-972,100.26-198,729.27

Finding the Fourth Proportional to 647,942.49, 972,100.26 and 198,729.27

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Solution

The fourth proportional to 647,942.49, 972,100.26 and 198,729.27 is: 298,151.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,942.49 : 972,100.26 = 198,729.27 : x
  2. Step 2: Convert to fraction form
    647,942.49/972,100.26 = 198,729.27/x
  3. Step 3: Cross multiply
    647,942.49x = 972,100.26 × 198,729.27
  4. Step 4: Simplify right side
    647,942.49x = 193,184,775,036.61
  5. Step 5: Solve for x
    x = 193,184,775,036.61/647,942.49
  6. Step 6: Final answer
    x = 298,151.11

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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.