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Finding the Fourth Proportional to 281,775.78, 388,844.46 and 154,448.64

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Solution

The fourth proportional to 281,775.78, 388,844.46 and 154,448.64 is: 213,135.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,775.78 : 388,844.46 = 154,448.64 : x
  2. Step 2: Convert to fraction form
    281,775.78/388,844.46 = 154,448.64/x
  3. Step 3: Cross multiply
    281,775.78x = 388,844.46 × 154,448.64
  4. Step 4: Simplify right side
    281,775.78x = 60,056,498,018.53
  5. Step 5: Solve for x
    x = 60,056,498,018.53/281,775.78
  6. Step 6: Final answer
    x = 213,135.77

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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.