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Finding the Fourth Proportional to 281,849.70, 388,952.06 and 154,533.54

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Solution

The fourth proportional to 281,849.70, 388,952.06 and 154,533.54 is: 213,256.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,849.70 : 388,952.06 = 154,533.54 : x
  2. Step 2: Convert to fraction form
    281,849.70/388,952.06 = 154,533.54/x
  3. Step 3: Cross multiply
    281,849.70x = 388,952.06 × 154,533.54
  4. Step 4: Simplify right side
    281,849.70x = 60,106,138,722.09
  5. Step 5: Solve for x
    x = 60,106,138,722.09/281,849.70
  6. Step 6: Final answer
    x = 213,256.00

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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.