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Finding the Fourth Proportional to 220,137.40, 330,551.70 and 126,825.40

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Solution

The fourth proportional to 220,137.40, 330,551.70 and 126,825.40 is: 190,437.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,137.40 : 330,551.70 = 126,825.40 : x
  2. Step 2: Convert to fraction form
    220,137.40/330,551.70 = 126,825.40/x
  3. Step 3: Cross multiply
    220,137.40x = 330,551.70 × 126,825.40
  4. Step 4: Simplify right side
    220,137.40x = 41,922,351,573.18
  5. Step 5: Solve for x
    x = 41,922,351,573.18/220,137.40
  6. Step 6: Final answer
    x = 190,437.21

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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.