Home / 281,759.28-388,827-154,434.48

Finding the Fourth Proportional to 281,759.28, 388,827 and 154,434.48

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Solution

The fourth proportional to 281,759.28, 388,827 and 154,434.48 is: 213,119.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,759.28 : 388,827 = 154,434.48 : x
  2. Step 2: Convert to fraction form
    281,759.28/388,827 = 154,434.48/x
  3. Step 3: Cross multiply
    281,759.28x = 388,827 × 154,434.48
  4. Step 4: Simplify right side
    281,759.28x = 60,048,295,554.96
  5. Step 5: Solve for x
    x = 60,048,295,554.96/281,759.28
  6. Step 6: Final answer
    x = 213,119.14

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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.