Home / 281,575.53-388,583.90-154,251.09

Finding the Fourth Proportional to 281,575.53, 388,583.90 and 154,251.09

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Solution

The fourth proportional to 281,575.53, 388,583.90 and 154,251.09 is: 212,871.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,575.53 : 388,583.90 = 154,251.09 : x
  2. Step 2: Convert to fraction form
    281,575.53/388,583.90 = 154,251.09/x
  3. Step 3: Cross multiply
    281,575.53x = 388,583.90 × 154,251.09
  4. Step 4: Simplify right side
    281,575.53x = 59,939,490,131.45
  5. Step 5: Solve for x
    x = 59,939,490,131.45/281,575.53
  6. Step 6: Final answer
    x = 212,871.80

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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.