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Finding the Fourth Proportional to 377,471.50, 520,914.32 and 207,709.28

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Solution

The fourth proportional to 377,471.50, 520,914.32 and 207,709.28 is: 286,640.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,471.50 : 520,914.32 = 207,709.28 : x
  2. Step 2: Convert to fraction form
    377,471.50/520,914.32 = 207,709.28/x
  3. Step 3: Cross multiply
    377,471.50x = 520,914.32 × 207,709.28
  4. Step 4: Simplify right side
    377,471.50x = 108,198,738,348.89
  5. Step 5: Solve for x
    x = 108,198,738,348.89/377,471.50
  6. Step 6: Final answer
    x = 286,640.81

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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.