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Finding the Fourth Proportional to 281,272.62, 388,141.30 and 153,923.60

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Solution

The fourth proportional to 281,272.62, 388,141.30 and 153,923.60 is: 212,406.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,272.62 : 388,141.30 = 153,923.60 : x
  2. Step 2: Convert to fraction form
    281,272.62/388,141.30 = 153,923.60/x
  3. Step 3: Cross multiply
    281,272.62x = 388,141.30 × 153,923.60
  4. Step 4: Simplify right side
    281,272.62x = 59,744,106,204.68
  5. Step 5: Solve for x
    x = 59,744,106,204.68/281,272.62
  6. Step 6: Final answer
    x = 212,406.41

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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.