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Finding the Fourth Proportional to 411,890.40, 568,009.40 and 321,213.33

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Solution

The fourth proportional to 411,890.40, 568,009.40 and 321,213.33 is: 442,962.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,890.40 : 568,009.40 = 321,213.33 : x
  2. Step 2: Convert to fraction form
    411,890.40/568,009.40 = 321,213.33/x
  3. Step 3: Cross multiply
    411,890.40x = 568,009.40 × 321,213.33
  4. Step 4: Simplify right side
    411,890.40x = 182,452,189,239.24
  5. Step 5: Solve for x
    x = 182,452,189,239.24/411,890.40
  6. Step 6: Final answer
    x = 442,962.96

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.