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Finding the Fourth Proportional to 547,185.48, 755,154 and 305,515.56

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Solution

The fourth proportional to 547,185.48, 755,154 and 305,515.56 is: 421,632.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,185.48 : 755,154 = 305,515.56 : x
  2. Step 2: Convert to fraction form
    547,185.48/755,154 = 305,515.56/x
  3. Step 3: Cross multiply
    547,185.48x = 755,154 × 305,515.56
  4. Step 4: Simplify right side
    547,185.48x = 230,711,297,196.24
  5. Step 5: Solve for x
    x = 230,711,297,196.24/547,185.48
  6. Step 6: Final answer
    x = 421,632.71

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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.