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Finding the Fourth Proportional to 403,703.30, 557,111.08 and 219,940.96

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Solution

The fourth proportional to 403,703.30, 557,111.08 and 219,940.96 is: 303,518.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,703.30 : 557,111.08 = 219,940.96 : x
  2. Step 2: Convert to fraction form
    403,703.30/557,111.08 = 219,940.96/x
  3. Step 3: Cross multiply
    403,703.30x = 557,111.08 × 219,940.96
  4. Step 4: Simplify right side
    403,703.30x = 122,531,545,761.84
  5. Step 5: Solve for x
    x = 122,531,545,761.84/403,703.30
  6. Step 6: Final answer
    x = 303,518.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.