Home / 281,011.30-420,642.15-162,330.10

Finding the Fourth Proportional to 281,011.30, 420,642.15 and 162,330.10

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Solution

The fourth proportional to 281,011.30, 420,642.15 and 162,330.10 is: 242,989.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,011.30 : 420,642.15 = 162,330.10 : x
  2. Step 2: Convert to fraction form
    281,011.30/420,642.15 = 162,330.10/x
  3. Step 3: Cross multiply
    281,011.30x = 420,642.15 × 162,330.10
  4. Step 4: Simplify right side
    281,011.30x = 68,282,882,273.72
  5. Step 5: Solve for x
    x = 68,282,882,273.72/281,011.30
  6. Step 6: Final answer
    x = 242,989.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.