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Finding the Fourth Proportional to 252,908.68, 349,021.06 and 139,738.76

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Solution

The fourth proportional to 252,908.68, 349,021.06 and 139,738.76 is: 192,843.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,908.68 : 349,021.06 = 139,738.76 : x
  2. Step 2: Convert to fraction form
    252,908.68/349,021.06 = 139,738.76/x
  3. Step 3: Cross multiply
    252,908.68x = 349,021.06 × 139,738.76
  4. Step 4: Simplify right side
    252,908.68x = 48,771,770,138.29
  5. Step 5: Solve for x
    x = 48,771,770,138.29/252,908.68
  6. Step 6: Final answer
    x = 192,843.40

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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.