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Finding the Fourth Proportional to 561,803.37, 842,789.09 and 206,790.36

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Solution

The fourth proportional to 561,803.37, 842,789.09 and 206,790.36 is: 310,216.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,803.37 : 842,789.09 = 206,790.36 : x
  2. Step 2: Convert to fraction form
    561,803.37/842,789.09 = 206,790.36/x
  3. Step 3: Cross multiply
    561,803.37x = 842,789.09 × 206,790.36
  4. Step 4: Simplify right side
    561,803.37x = 174,280,659,325.17
  5. Step 5: Solve for x
    x = 174,280,659,325.17/561,803.37
  6. Step 6: Final answer
    x = 310,216.47

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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.