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Finding the Fourth Proportional to 219,894.88, 330,296.64 and 210,311.68

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Solution

The fourth proportional to 219,894.88, 330,296.64 and 210,311.68 is: 315,902.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,894.88 : 330,296.64 = 210,311.68 : x
  2. Step 2: Convert to fraction form
    219,894.88/330,296.64 = 210,311.68/x
  3. Step 3: Cross multiply
    219,894.88x = 330,296.64 × 210,311.68
  4. Step 4: Simplify right side
    219,894.88x = 69,465,241,256.76
  5. Step 5: Solve for x
    x = 69,465,241,256.76/219,894.88
  6. Step 6: Final answer
    x = 315,902.04

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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.