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Finding the Fourth Proportional to 436,920.57, 655,455.60 and 200,283.57

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Solution

The fourth proportional to 436,920.57, 655,455.60 and 200,283.57 is: 300,459.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,920.57 : 655,455.60 = 200,283.57 : x
  2. Step 2: Convert to fraction form
    436,920.57/655,455.60 = 200,283.57/x
  3. Step 3: Cross multiply
    436,920.57x = 655,455.60 × 200,283.57
  4. Step 4: Simplify right side
    436,920.57x = 131,276,987,544.49
  5. Step 5: Solve for x
    x = 131,276,987,544.49/436,920.57
  6. Step 6: Final answer
    x = 300,459.62

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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.