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Finding the Fourth Proportional to 415,638.03, 623,690.60 and 226,111.65

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Solution

The fourth proportional to 415,638.03, 623,690.60 and 226,111.65 is: 339,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,638.03 : 623,690.60 = 226,111.65 : x
  2. Step 2: Convert to fraction form
    415,638.03/623,690.60 = 226,111.65/x
  3. Step 3: Cross multiply
    415,638.03x = 623,690.60 × 226,111.65
  4. Step 4: Simplify right side
    415,638.03x = 141,023,709,524.93
  5. Step 5: Solve for x
    x = 141,023,709,524.93/415,638.03
  6. Step 6: Final answer
    x = 339,294.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.