Home / 427,777.08-642,828.78-228,238.44

Finding the Fourth Proportional to 427,777.08, 642,828.78 and 228,238.44

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Solution

The fourth proportional to 427,777.08, 642,828.78 and 228,238.44 is: 342,978.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,777.08 : 642,828.78 = 228,238.44 : x
  2. Step 2: Convert to fraction form
    427,777.08/642,828.78 = 228,238.44/x
  3. Step 3: Cross multiply
    427,777.08x = 642,828.78 × 228,238.44
  4. Step 4: Simplify right side
    427,777.08x = 146,718,237,934.30
  5. Step 5: Solve for x
    x = 146,718,237,934.30/427,777.08
  6. Step 6: Final answer
    x = 342,978.26

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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.