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Finding the Fourth Proportional to 377,399.25, 520,821.90 and 207,644.31

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Solution

The fourth proportional to 377,399.25, 520,821.90 and 207,644.31 is: 286,555.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,399.25 : 520,821.90 = 207,644.31 : x
  2. Step 2: Convert to fraction form
    377,399.25/520,821.90 = 207,644.31/x
  3. Step 3: Cross multiply
    377,399.25x = 520,821.90 × 207,644.31
  4. Step 4: Simplify right side
    377,399.25x = 108,145,704,058.39
  5. Step 5: Solve for x
    x = 108,145,704,058.39/377,399.25
  6. Step 6: Final answer
    x = 286,555.16

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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.