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Finding the Fourth Proportional to 401,502.22, 554,089.01 and 220,220.78

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Solution

The fourth proportional to 401,502.22, 554,089.01 and 220,220.78 is: 303,913.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,502.22 : 554,089.01 = 220,220.78 : x
  2. Step 2: Convert to fraction form
    401,502.22/554,089.01 = 220,220.78/x
  3. Step 3: Cross multiply
    401,502.22x = 554,089.01 × 220,220.78
  4. Step 4: Simplify right side
    401,502.22x = 122,021,910,100.08
  5. Step 5: Solve for x
    x = 122,021,910,100.08/401,502.22
  6. Step 6: Final answer
    x = 303,913.42

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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.