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Finding the Fourth Proportional to 281,610, 388,622.04 and 154,286.16

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Solution

The fourth proportional to 281,610, 388,622.04 and 154,286.16 is: 212,915.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,610 : 388,622.04 = 154,286.16 : x
  2. Step 2: Convert to fraction form
    281,610/388,622.04 = 154,286.16/x
  3. Step 3: Cross multiply
    281,610x = 388,622.04 × 154,286.16
  4. Step 4: Simplify right side
    281,610x = 59,959,002,242.97
  5. Step 5: Solve for x
    x = 59,959,002,242.97/281,610
  6. Step 6: Final answer
    x = 212,915.03

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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.