Home / 255,170.72-381,819.96-212,946.57

Finding the Fourth Proportional to 255,170.72, 381,819.96 and 212,946.57

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Solution

The fourth proportional to 255,170.72, 381,819.96 and 212,946.57 is: 318,638.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,170.72 : 381,819.96 = 212,946.57 : x
  2. Step 2: Convert to fraction form
    255,170.72/381,819.96 = 212,946.57/x
  3. Step 3: Cross multiply
    255,170.72x = 381,819.96 × 212,946.57
  4. Step 4: Simplify right side
    255,170.72x = 81,307,250,839.54
  5. Step 5: Solve for x
    x = 81,307,250,839.54/255,170.72
  6. Step 6: Final answer
    x = 318,638.64

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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.