Home / 281,816.12-388,922.28-167,162.78

Finding the Fourth Proportional to 281,816.12, 388,922.28 and 167,162.78

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Solution

The fourth proportional to 281,816.12, 388,922.28 and 167,162.78 is: 230,694.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,816.12 : 388,922.28 = 167,162.78 : x
  2. Step 2: Convert to fraction form
    281,816.12/388,922.28 = 167,162.78/x
  3. Step 3: Cross multiply
    281,816.12x = 388,922.28 × 167,162.78
  4. Step 4: Simplify right side
    281,816.12x = 65,013,329,528.74
  5. Step 5: Solve for x
    x = 65,013,329,528.74/281,816.12
  6. Step 6: Final answer
    x = 230,694.15

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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.