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Finding the Fourth Proportional to 230,779.69, 346,324.17 and 81,020.43

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Solution

The fourth proportional to 230,779.69, 346,324.17 and 81,020.43 is: 121,584.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,779.69 : 346,324.17 = 81,020.43 : x
  2. Step 2: Convert to fraction form
    230,779.69/346,324.17 = 81,020.43/x
  3. Step 3: Cross multiply
    230,779.69x = 346,324.17 × 81,020.43
  4. Step 4: Simplify right side
    230,779.69x = 28,059,333,172.79
  5. Step 5: Solve for x
    x = 28,059,333,172.79/230,779.69
  6. Step 6: Final answer
    x = 121,584.93

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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.