Home / 281,356.06-388,271.46-154,039.72

Finding the Fourth Proportional to 281,356.06, 388,271.46 and 154,039.72

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Solution

The fourth proportional to 281,356.06, 388,271.46 and 154,039.72 is: 212,574.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,356.06 : 388,271.46 = 154,039.72 : x
  2. Step 2: Convert to fraction form
    281,356.06/388,271.46 = 154,039.72/x
  3. Step 3: Cross multiply
    281,356.06x = 388,271.46 × 154,039.72
  4. Step 4: Simplify right side
    281,356.06x = 59,809,226,982.39
  5. Step 5: Solve for x
    x = 59,809,226,982.39/281,356.06
  6. Step 6: Final answer
    x = 212,574.87

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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.