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Finding the Fourth Proportional to 403,699.94, 557,099.37 and 219,940.70

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Solution

The fourth proportional to 403,699.94, 557,099.37 and 219,940.70 is: 303,514.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,699.94 : 557,099.37 = 219,940.70 : x
  2. Step 2: Convert to fraction form
    403,699.94/557,099.37 = 219,940.70/x
  3. Step 3: Cross multiply
    403,699.94x = 557,099.37 × 219,940.70
  4. Step 4: Simplify right side
    403,699.94x = 122,528,822,621.86
  5. Step 5: Solve for x
    x = 122,528,822,621.86/403,699.94
  6. Step 6: Final answer
    x = 303,514.60

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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.