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Finding the Fourth Proportional to 443,069.20, 664,603.80 and 218,537.20

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Solution

The fourth proportional to 443,069.20, 664,603.80 and 218,537.20 is: 327,805.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,069.20 : 664,603.80 = 218,537.20 : x
  2. Step 2: Convert to fraction form
    443,069.20/664,603.80 = 218,537.20/x
  3. Step 3: Cross multiply
    443,069.20x = 664,603.80 × 218,537.20
  4. Step 4: Simplify right side
    443,069.20x = 145,240,653,561.36
  5. Step 5: Solve for x
    x = 145,240,653,561.36/443,069.20
  6. Step 6: Final answer
    x = 327,805.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.