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Finding the Fourth Proportional to 336,908.40, 505,370.70 and 100,258.80

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Solution

The fourth proportional to 336,908.40, 505,370.70 and 100,258.80 is: 150,390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,908.40 : 505,370.70 = 100,258.80 : x
  2. Step 2: Convert to fraction form
    336,908.40/505,370.70 = 100,258.80/x
  3. Step 3: Cross multiply
    336,908.40x = 505,370.70 × 100,258.80
  4. Step 4: Simplify right side
    336,908.40x = 50,667,859,937.16
  5. Step 5: Solve for x
    x = 50,667,859,937.16/336,908.40
  6. Step 6: Final answer
    x = 150,390.61

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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.