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Finding the Fourth Proportional to 281,350.62, 388,263.84 and 154,026.21

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Solution

The fourth proportional to 281,350.62, 388,263.84 and 154,026.21 is: 212,556.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,350.62 : 388,263.84 = 154,026.21 : x
  2. Step 2: Convert to fraction form
    281,350.62/388,263.84 = 154,026.21/x
  3. Step 3: Cross multiply
    281,350.62x = 388,263.84 × 154,026.21
  4. Step 4: Simplify right side
    281,350.62x = 59,802,807,755.25
  5. Step 5: Solve for x
    x = 59,802,807,755.25/281,350.62
  6. Step 6: Final answer
    x = 212,556.16

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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.