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Finding the Fourth Proportional to 366,174.72, 505,419.84 and 215,372.16

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Solution

The fourth proportional to 366,174.72, 505,419.84 and 215,372.16 is: 297,271.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,174.72 : 505,419.84 = 215,372.16 : x
  2. Step 2: Convert to fraction form
    366,174.72/505,419.84 = 215,372.16/x
  3. Step 3: Cross multiply
    366,174.72x = 505,419.84 × 215,372.16
  4. Step 4: Simplify right side
    366,174.72x = 108,853,362,647.65
  5. Step 5: Solve for x
    x = 108,853,362,647.65/366,174.72
  6. Step 6: Final answer
    x = 297,271.65

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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.