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Finding the Fourth Proportional to 547,662.56, 755,766 and 305,948.60

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Solution

The fourth proportional to 547,662.56, 755,766 and 305,948.60 is: 422,204.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,662.56 : 755,766 = 305,948.60 : x
  2. Step 2: Convert to fraction form
    547,662.56/755,766 = 305,948.60/x
  3. Step 3: Cross multiply
    547,662.56x = 755,766 × 305,948.60
  4. Step 4: Simplify right side
    547,662.56x = 231,225,549,627.60
  5. Step 5: Solve for x
    x = 231,225,549,627.60/547,662.56
  6. Step 6: Final answer
    x = 422,204.41

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1.5x scale

Why These Related Problems?

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