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Finding the Fourth Proportional to 219,874.60, 329,811.90 and 207,627.40

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Solution

The fourth proportional to 219,874.60, 329,811.90 and 207,627.40 is: 311,441.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,874.60 : 329,811.90 = 207,627.40 : x
  2. Step 2: Convert to fraction form
    219,874.60/329,811.90 = 207,627.40/x
  3. Step 3: Cross multiply
    219,874.60x = 329,811.90 × 207,627.40
  4. Step 4: Simplify right side
    219,874.60x = 68,477,987,286.06
  5. Step 5: Solve for x
    x = 68,477,987,286.06/219,874.60
  6. Step 6: Final answer
    x = 311,441.10

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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.