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Finding the Fourth Proportional to 404,207.80, 605,436.90 and 217,000.60

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Solution

The fourth proportional to 404,207.80, 605,436.90 and 217,000.60 is: 325,031.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,207.80 : 605,436.90 = 217,000.60 : x
  2. Step 2: Convert to fraction form
    404,207.80/605,436.90 = 217,000.60/x
  3. Step 3: Cross multiply
    404,207.80x = 605,436.90 × 217,000.60
  4. Step 4: Simplify right side
    404,207.80x = 131,380,170,562.14
  5. Step 5: Solve for x
    x = 131,380,170,562.14/404,207.80
  6. Step 6: Final answer
    x = 325,031.26

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1.5x scale

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.