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Finding the Fourth Proportional to 281,494.26, 388,471.41 and 154,176.84

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Solution

The fourth proportional to 281,494.26, 388,471.41 and 154,176.84 is: 212,769.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,494.26 : 388,471.41 = 154,176.84 : x
  2. Step 2: Convert to fraction form
    281,494.26/388,471.41 = 154,176.84/x
  3. Step 3: Cross multiply
    281,494.26x = 388,471.41 × 154,176.84
  4. Step 4: Simplify right side
    281,494.26x = 59,893,294,424.14
  5. Step 5: Solve for x
    x = 59,893,294,424.14/281,494.26
  6. Step 6: Final answer
    x = 212,769.15

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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.