Home / 221,128.62-305,061.44-140,512.89

Finding the Fourth Proportional to 221,128.62, 305,061.44 and 140,512.89

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Solution

The fourth proportional to 221,128.62, 305,061.44 and 140,512.89 is: 193,846.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,128.62 : 305,061.44 = 140,512.89 : x
  2. Step 2: Convert to fraction form
    221,128.62/305,061.44 = 140,512.89/x
  3. Step 3: Cross multiply
    221,128.62x = 305,061.44 × 140,512.89
  4. Step 4: Simplify right side
    221,128.62x = 42,865,064,506.78
  5. Step 5: Solve for x
    x = 42,865,064,506.78/221,128.62
  6. Step 6: Final answer
    x = 193,846.75

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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.