Home / 281,467.68-388,426.64-154,144.16

Finding the Fourth Proportional to 281,467.68, 388,426.64 and 154,144.16

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Solution

The fourth proportional to 281,467.68, 388,426.64 and 154,144.16 is: 212,719.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,467.68 : 388,426.64 = 154,144.16 : x
  2. Step 2: Convert to fraction form
    281,467.68/388,426.64 = 154,144.16/x
  3. Step 3: Cross multiply
    281,467.68x = 388,426.64 × 154,144.16
  4. Step 4: Simplify right side
    281,467.68x = 59,873,698,144.42
  5. Step 5: Solve for x
    x = 59,873,698,144.42/281,467.68
  6. Step 6: Final answer
    x = 212,719.62

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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.