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Finding the Fourth Proportional to 264,013.20, 396,019.80 and 201,805.20

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Solution

The fourth proportional to 264,013.20, 396,019.80 and 201,805.20 is: 302,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,013.20 : 396,019.80 = 201,805.20 : x
  2. Step 2: Convert to fraction form
    264,013.20/396,019.80 = 201,805.20/x
  3. Step 3: Cross multiply
    264,013.20x = 396,019.80 × 201,805.20
  4. Step 4: Simplify right side
    264,013.20x = 79,918,854,942.96
  5. Step 5: Solve for x
    x = 79,918,854,942.96/264,013.20
  6. Step 6: Final answer
    x = 302,707.80

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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.