Home / 281,440.80-388,376.64-154,114.20

Finding the Fourth Proportional to 281,440.80, 388,376.64 and 154,114.20

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Solution

The fourth proportional to 281,440.80, 388,376.64 and 154,114.20 is: 212,671.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,440.80 : 388,376.64 = 154,114.20 : x
  2. Step 2: Convert to fraction form
    281,440.80/388,376.64 = 154,114.20/x
  3. Step 3: Cross multiply
    281,440.80x = 388,376.64 × 154,114.20
  4. Step 4: Simplify right side
    281,440.80x = 59,854,355,172.29
  5. Step 5: Solve for x
    x = 59,854,355,172.29/281,440.80
  6. Step 6: Final answer
    x = 212,671.21

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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.