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Finding the Fourth Proportional to 281,558.33, 388,550.57 and 154,238.45

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Solution

The fourth proportional to 281,558.33, 388,550.57 and 154,238.45 is: 212,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,558.33 : 388,550.57 = 154,238.45 : x
  2. Step 2: Convert to fraction form
    281,558.33/388,550.57 = 154,238.45/x
  3. Step 3: Cross multiply
    281,558.33x = 388,550.57 × 154,238.45
  4. Step 4: Simplify right side
    281,558.33x = 59,929,436,892.22
  5. Step 5: Solve for x
    x = 59,929,436,892.22/281,558.33
  6. Step 6: Final answer
    x = 212,849.10

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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.