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Finding the Fourth Proportional to 660,150, 990,352.26 and 281,063.70

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Solution

The fourth proportional to 660,150, 990,352.26 and 281,063.70 is: 421,649.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,150 : 990,352.26 = 281,063.70 : x
  2. Step 2: Convert to fraction form
    660,150/990,352.26 = 281,063.70/x
  3. Step 3: Cross multiply
    660,150x = 990,352.26 × 281,063.70
  4. Step 4: Simplify right side
    660,150x = 278,352,070,498.96
  5. Step 5: Solve for x
    x = 278,352,070,498.96/660,150
  6. Step 6: Final answer
    x = 421,649.73

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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.