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Finding the Fourth Proportional to 219,772.70, 329,659.05 and 210,915.35

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Solution

The fourth proportional to 219,772.70, 329,659.05 and 210,915.35 is: 316,373.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,772.70 : 329,659.05 = 210,915.35 : x
  2. Step 2: Convert to fraction form
    219,772.70/329,659.05 = 210,915.35/x
  3. Step 3: Cross multiply
    219,772.70x = 329,659.05 × 210,915.35
  4. Step 4: Simplify right side
    219,772.70x = 69,530,153,911.42
  5. Step 5: Solve for x
    x = 69,530,153,911.42/219,772.70
  6. Step 6: Final answer
    x = 316,373.03

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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.