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Finding the Fourth Proportional to 490,106.40, 734,770.80 and 268,490.40

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Solution

The fourth proportional to 490,106.40, 734,770.80 and 268,490.40 is: 402,522.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,106.40 : 734,770.80 = 268,490.40 : x
  2. Step 2: Convert to fraction form
    490,106.40/734,770.80 = 268,490.40/x
  3. Step 3: Cross multiply
    490,106.40x = 734,770.80 × 268,490.40
  4. Step 4: Simplify right side
    490,106.40x = 197,278,906,000.32
  5. Step 5: Solve for x
    x = 197,278,906,000.32/490,106.40
  6. Step 6: Final answer
    x = 402,522.61

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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.