Home / 257,840.20-355,813.95-143,112.16

Finding the Fourth Proportional to 257,840.20, 355,813.95 and 143,112.16

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Solution

The fourth proportional to 257,840.20, 355,813.95 and 143,112.16 is: 197,491.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,840.20 : 355,813.95 = 143,112.16 : x
  2. Step 2: Convert to fraction form
    257,840.20/355,813.95 = 143,112.16/x
  3. Step 3: Cross multiply
    257,840.20x = 355,813.95 × 143,112.16
  4. Step 4: Simplify right side
    257,840.20x = 50,921,302,942.63
  5. Step 5: Solve for x
    x = 50,921,302,942.63/257,840.20
  6. Step 6: Final answer
    x = 197,491.71

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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.