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Finding the Fourth Proportional to 401,513.69, 554,124.44 and 220,260.96

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Solution

The fourth proportional to 401,513.69, 554,124.44 and 220,260.96 is: 303,979.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,513.69 : 554,124.44 = 220,260.96 : x
  2. Step 2: Convert to fraction form
    401,513.69/554,124.44 = 220,260.96/x
  3. Step 3: Cross multiply
    401,513.69x = 554,124.44 × 220,260.96
  4. Step 4: Simplify right side
    401,513.69x = 122,051,980,012.56
  5. Step 5: Solve for x
    x = 122,051,980,012.56/401,513.69
  6. Step 6: Final answer
    x = 303,979.63

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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.