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Finding the Fourth Proportional to 281,332.98, 388,240.56 and 154,020.42

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Solution

The fourth proportional to 281,332.98, 388,240.56 and 154,020.42 is: 212,548.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,332.98 : 388,240.56 = 154,020.42 : x
  2. Step 2: Convert to fraction form
    281,332.98/388,240.56 = 154,020.42/x
  3. Step 3: Cross multiply
    281,332.98x = 388,240.56 × 154,020.42
  4. Step 4: Simplify right side
    281,332.98x = 59,796,974,112.24
  5. Step 5: Solve for x
    x = 59,796,974,112.24/281,332.98
  6. Step 6: Final answer
    x = 212,548.75

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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.