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Finding the Fourth Proportional to 401,808.47, 554,494.01 and 220,523.36

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Solution

The fourth proportional to 401,808.47, 554,494.01 and 220,523.36 is: 304,321.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,808.47 : 554,494.01 = 220,523.36 : x
  2. Step 2: Convert to fraction form
    401,808.47/554,494.01 = 220,523.36/x
  3. Step 3: Cross multiply
    401,808.47x = 554,494.01 × 220,523.36
  4. Step 4: Simplify right side
    401,808.47x = 122,278,878,309.99
  5. Step 5: Solve for x
    x = 122,278,878,309.99/401,808.47
  6. Step 6: Final answer
    x = 304,321.31

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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.