Home / 281,380.15-388,304.58-154,055.71

Finding the Fourth Proportional to 281,380.15, 388,304.58 and 154,055.71

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Solution

The fourth proportional to 281,380.15, 388,304.58 and 154,055.71 is: 212,596.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,380.15 : 388,304.58 = 154,055.71 : x
  2. Step 2: Convert to fraction form
    281,380.15/388,304.58 = 154,055.71/x
  3. Step 3: Cross multiply
    281,380.15x = 388,304.58 × 154,055.71
  4. Step 4: Simplify right side
    281,380.15x = 59,820,537,768.15
  5. Step 5: Solve for x
    x = 59,820,537,768.15/281,380.15
  6. Step 6: Final answer
    x = 212,596.87

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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.