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Finding the Fourth Proportional to 547,447.62, 755,480.82 and 305,751.30

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Solution

The fourth proportional to 547,447.62, 755,480.82 and 305,751.30 is: 421,938.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,447.62 : 755,480.82 = 305,751.30 : x
  2. Step 2: Convert to fraction form
    547,447.62/755,480.82 = 305,751.30/x
  3. Step 3: Cross multiply
    547,447.62x = 755,480.82 × 305,751.30
  4. Step 4: Simplify right side
    547,447.62x = 230,989,242,840.07
  5. Step 5: Solve for x
    x = 230,989,242,840.07/547,447.62
  6. Step 6: Final answer
    x = 421,938.53

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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.