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Finding the Fourth Proportional to 221,604.18, 305,801.25 and 130,968.60

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Solution

The fourth proportional to 221,604.18, 305,801.25 and 130,968.60 is: 180,729.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,604.18 : 305,801.25 = 130,968.60 : x
  2. Step 2: Convert to fraction form
    221,604.18/305,801.25 = 130,968.60/x
  3. Step 3: Cross multiply
    221,604.18x = 305,801.25 × 130,968.60
  4. Step 4: Simplify right side
    221,604.18x = 40,050,361,590.75
  5. Step 5: Solve for x
    x = 40,050,361,590.75/221,604.18
  6. Step 6: Final answer
    x = 180,729.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.