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Finding the Fourth Proportional to 219,771.70, 329,657.55 and 210,914.35

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Solution

The fourth proportional to 219,771.70, 329,657.55 and 210,914.35 is: 316,371.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,771.70 : 329,657.55 = 210,914.35 : x
  2. Step 2: Convert to fraction form
    219,771.70/329,657.55 = 210,914.35/x
  3. Step 3: Cross multiply
    219,771.70x = 329,657.55 × 210,914.35
  4. Step 4: Simplify right side
    219,771.70x = 69,529,507,880.84
  5. Step 5: Solve for x
    x = 69,529,507,880.84/219,771.70
  6. Step 6: Final answer
    x = 316,371.53

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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.