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Finding the Fourth Proportional to 281,759.28, 388,837.44 and 154,434.84

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Solution

The fourth proportional to 281,759.28, 388,837.44 and 154,434.84 is: 213,125.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,759.28 : 388,837.44 = 154,434.84 : x
  2. Step 2: Convert to fraction form
    281,759.28/388,837.44 = 154,434.84/x
  3. Step 3: Cross multiply
    281,759.28x = 388,837.44 × 154,434.84
  4. Step 4: Simplify right side
    281,759.28x = 60,050,047,832.41
  5. Step 5: Solve for x
    x = 60,050,047,832.41/281,759.28
  6. Step 6: Final answer
    x = 213,125.36

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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.