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Finding the Fourth Proportional to 281,740.67, 388,820.42 and 154,416.16

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Solution

The fourth proportional to 281,740.67, 388,820.42 and 154,416.16 is: 213,104.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,740.67 : 388,820.42 = 154,416.16 : x
  2. Step 2: Convert to fraction form
    281,740.67/388,820.42 = 154,416.16/x
  3. Step 3: Cross multiply
    281,740.67x = 388,820.42 × 154,416.16
  4. Step 4: Simplify right side
    281,740.67x = 60,040,156,185.99
  5. Step 5: Solve for x
    x = 60,040,156,185.99/281,740.67
  6. Step 6: Final answer
    x = 213,104.33

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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.