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Finding the Fourth Proportional to 401,811, 554,525.10 and 222,963

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Solution

The fourth proportional to 401,811, 554,525.10 and 222,963 is: 307,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,811 : 554,525.10 = 222,963 : x
  2. Step 2: Convert to fraction form
    401,811/554,525.10 = 222,963/x
  3. Step 3: Cross multiply
    401,811x = 554,525.10 × 222,963
  4. Step 4: Simplify right side
    401,811x = 123,638,579,871.30
  5. Step 5: Solve for x
    x = 123,638,579,871.30/401,811
  6. Step 6: Final answer
    x = 307,703.32

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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.