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Finding the Fourth Proportional to 617,649.22, 926,548.58 and 218,208.25

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Solution

The fourth proportional to 617,649.22, 926,548.58 and 218,208.25 is: 327,338.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,649.22 : 926,548.58 = 218,208.25 : x
  2. Step 2: Convert to fraction form
    617,649.22/926,548.58 = 218,208.25/x
  3. Step 3: Cross multiply
    617,649.22x = 926,548.58 × 218,208.25
  4. Step 4: Simplify right side
    617,649.22x = 202,180,544,181.79
  5. Step 5: Solve for x
    x = 202,180,544,181.79/617,649.22
  6. Step 6: Final answer
    x = 327,338.78

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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.