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Finding the Fourth Proportional to 275,065.13, 379,608.09 and 154,214.24

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Solution

The fourth proportional to 275,065.13, 379,608.09 and 154,214.24 is: 212,825.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,065.13 : 379,608.09 = 154,214.24 : x
  2. Step 2: Convert to fraction form
    275,065.13/379,608.09 = 154,214.24/x
  3. Step 3: Cross multiply
    275,065.13x = 379,608.09 × 154,214.24
  4. Step 4: Simplify right side
    275,065.13x = 58,540,971,199.16
  5. Step 5: Solve for x
    x = 58,540,971,199.16/275,065.13
  6. Step 6: Final answer
    x = 212,825.86

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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.