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Finding the Fourth Proportional to 257,874.60, 355,849.11 and 143,144.22

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Solution

The fourth proportional to 257,874.60, 355,849.11 and 143,144.22 is: 197,529.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,874.60 : 355,849.11 = 143,144.22 : x
  2. Step 2: Convert to fraction form
    257,874.60/355,849.11 = 143,144.22/x
  3. Step 3: Cross multiply
    257,874.60x = 355,849.11 × 143,144.22
  4. Step 4: Simplify right side
    257,874.60x = 50,937,743,288.64
  5. Step 5: Solve for x
    x = 50,937,743,288.64/257,874.60
  6. Step 6: Final answer
    x = 197,529.12

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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.