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Finding the Fourth Proportional to 403,969.80, 557,473.79 and 220,204.35

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Solution

The fourth proportional to 403,969.80, 557,473.79 and 220,204.35 is: 303,879.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,969.80 : 557,473.79 = 220,204.35 : x
  2. Step 2: Convert to fraction form
    403,969.80/557,473.79 = 220,204.35/x
  3. Step 3: Cross multiply
    403,969.80x = 557,473.79 × 220,204.35
  4. Step 4: Simplify right side
    403,969.80x = 122,758,153,147.40
  5. Step 5: Solve for x
    x = 122,758,153,147.40/403,969.80
  6. Step 6: Final answer
    x = 303,879.53

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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.