Home / 281,328.41-388,233.86-154,012.20

Finding the Fourth Proportional to 281,328.41, 388,233.86 and 154,012.20

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Solution

The fourth proportional to 281,328.41, 388,233.86 and 154,012.20 is: 212,537.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,328.41 : 388,233.86 = 154,012.20 : x
  2. Step 2: Convert to fraction form
    281,328.41/388,233.86 = 154,012.20/x
  3. Step 3: Cross multiply
    281,328.41x = 388,233.86 × 154,012.20
  4. Step 4: Simplify right side
    281,328.41x = 59,792,750,123.03
  5. Step 5: Solve for x
    x = 59,792,750,123.03/281,328.41
  6. Step 6: Final answer
    x = 212,537.20

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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.