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Finding the Fourth Proportional to 300,844.68, 414,290.70 and 281,612.40

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Solution

The fourth proportional to 300,844.68, 414,290.70 and 281,612.40 is: 387,806.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,844.68 : 414,290.70 = 281,612.40 : x
  2. Step 2: Convert to fraction form
    300,844.68/414,290.70 = 281,612.40/x
  3. Step 3: Cross multiply
    300,844.68x = 414,290.70 × 281,612.40
  4. Step 4: Simplify right side
    300,844.68x = 116,669,396,771.09
  5. Step 5: Solve for x
    x = 116,669,396,771.09/300,844.68
  6. Step 6: Final answer
    x = 387,806.08

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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.