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Finding the Fourth Proportional to 257,735.39, 355,676.74 and 143,014.49

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Solution

The fourth proportional to 257,735.39, 355,676.74 and 143,014.49 is: 197,361.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,735.39 : 355,676.74 = 143,014.49 : x
  2. Step 2: Convert to fraction form
    257,735.39/355,676.74 = 143,014.49/x
  3. Step 3: Cross multiply
    257,735.39x = 355,676.74 × 143,014.49
  4. Step 4: Simplify right side
    257,735.39x = 50,866,925,440.04
  5. Step 5: Solve for x
    x = 50,866,925,440.04/257,735.39
  6. Step 6: Final answer
    x = 197,361.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.