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Finding the Fourth Proportional to 377,409.36, 520,739.42 and 275,490.38

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Solution

The fourth proportional to 377,409.36, 520,739.42 and 275,490.38 is: 380,114.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,409.36 : 520,739.42 = 275,490.38 : x
  2. Step 2: Convert to fraction form
    377,409.36/520,739.42 = 275,490.38/x
  3. Step 3: Cross multiply
    377,409.36x = 520,739.42 × 275,490.38
  4. Step 4: Simplify right side
    377,409.36x = 143,458,696,715.63
  5. Step 5: Solve for x
    x = 143,458,696,715.63/377,409.36
  6. Step 6: Final answer
    x = 380,114.31

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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.