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Finding the Fourth Proportional to 377,879.66, 520,866.14 and 255,333.77

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Solution

The fourth proportional to 377,879.66, 520,866.14 and 255,333.77 is: 351,949.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,879.66 : 520,866.14 = 255,333.77 : x
  2. Step 2: Convert to fraction form
    377,879.66/520,866.14 = 255,333.77/x
  3. Step 3: Cross multiply
    377,879.66x = 520,866.14 × 255,333.77
  4. Step 4: Simplify right side
    377,879.66x = 132,994,711,310.55
  5. Step 5: Solve for x
    x = 132,994,711,310.55/377,879.66
  6. Step 6: Final answer
    x = 351,949.91

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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.