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Finding the Fourth Proportional to 221,813.20, 332,136.60 and 162,326.80

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Solution

The fourth proportional to 221,813.20, 332,136.60 and 162,326.80 is: 243,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,813.20 : 332,136.60 = 162,326.80 : x
  2. Step 2: Convert to fraction form
    221,813.20/332,136.60 = 162,326.80/x
  3. Step 3: Cross multiply
    221,813.20x = 332,136.60 × 162,326.80
  4. Step 4: Simplify right side
    221,813.20x = 53,914,671,440.88
  5. Step 5: Solve for x
    x = 53,914,671,440.88/221,813.20
  6. Step 6: Final answer
    x = 243,063.40

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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.