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Finding the Fourth Proportional to 281,542.88, 388,529.37 and 154,218.98

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Solution

The fourth proportional to 281,542.88, 388,529.37 and 154,218.98 is: 212,822.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,542.88 : 388,529.37 = 154,218.98 : x
  2. Step 2: Convert to fraction form
    281,542.88/388,529.37 = 154,218.98/x
  3. Step 3: Cross multiply
    281,542.88x = 388,529.37 × 154,218.98
  4. Step 4: Simplify right side
    281,542.88x = 59,918,601,198.80
  5. Step 5: Solve for x
    x = 59,918,601,198.80/281,542.88
  6. Step 6: Final answer
    x = 212,822.30

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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.