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Finding the Fourth Proportional to 323,779.44, 486,091.52 and 217,638.86

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Solution

The fourth proportional to 323,779.44, 486,091.52 and 217,638.86 is: 326,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,779.44 : 486,091.52 = 217,638.86 : x
  2. Step 2: Convert to fraction form
    323,779.44/486,091.52 = 217,638.86/x
  3. Step 3: Cross multiply
    323,779.44x = 486,091.52 × 217,638.86
  4. Step 4: Simplify right side
    323,779.44x = 105,792,406,027.79
  5. Step 5: Solve for x
    x = 105,792,406,027.79/323,779.44
  6. Step 6: Final answer
    x = 326,742.20

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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.