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Finding the Fourth Proportional to 377,513.65, 520,991.31 and 216,379.14

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Solution

The fourth proportional to 377,513.65, 520,991.31 and 216,379.14 is: 298,616.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,513.65 : 520,991.31 = 216,379.14 : x
  2. Step 2: Convert to fraction form
    377,513.65/520,991.31 = 216,379.14/x
  3. Step 3: Cross multiply
    377,513.65x = 520,991.31 × 216,379.14
  4. Step 4: Simplify right side
    377,513.65x = 112,731,651,605.27
  5. Step 5: Solve for x
    x = 112,731,651,605.27/377,513.65
  6. Step 6: Final answer
    x = 298,616.09

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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.