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Finding the Fourth Proportional to 277,981.20, 417,166.20 and 120,322.80

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Solution

The fourth proportional to 277,981.20, 417,166.20 and 120,322.80 is: 180,568.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,981.20 : 417,166.20 = 120,322.80 : x
  2. Step 2: Convert to fraction form
    277,981.20/417,166.20 = 120,322.80/x
  3. Step 3: Cross multiply
    277,981.20x = 417,166.20 × 120,322.80
  4. Step 4: Simplify right side
    277,981.20x = 50,194,605,249.36
  5. Step 5: Solve for x
    x = 50,194,605,249.36/277,981.20
  6. Step 6: Final answer
    x = 180,568.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.