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Finding the Fourth Proportional to 288,218.49, 394,857.48 and 277,440.45

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Solution

The fourth proportional to 288,218.49, 394,857.48 and 277,440.45 is: 380,091.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,218.49 : 394,857.48 = 277,440.45 : x
  2. Step 2: Convert to fraction form
    288,218.49/394,857.48 = 277,440.45/x
  3. Step 3: Cross multiply
    288,218.49x = 394,857.48 × 277,440.45
  4. Step 4: Simplify right side
    288,218.49x = 109,549,436,937.07
  5. Step 5: Solve for x
    x = 109,549,436,937.07/288,218.49
  6. Step 6: Final answer
    x = 380,091.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.