Home / 281,433.12-388,363.23-154,084.08

Finding the Fourth Proportional to 281,433.12, 388,363.23 and 154,084.08

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Solution

The fourth proportional to 281,433.12, 388,363.23 and 154,084.08 is: 212,628.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,433.12 : 388,363.23 = 154,084.08 : x
  2. Step 2: Convert to fraction form
    281,433.12/388,363.23 = 154,084.08/x
  3. Step 3: Cross multiply
    281,433.12x = 388,363.23 × 154,084.08
  4. Step 4: Simplify right side
    281,433.12x = 59,840,591,000.38
  5. Step 5: Solve for x
    x = 59,840,591,000.38/281,433.12
  6. Step 6: Final answer
    x = 212,628.11

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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.