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Finding the Fourth Proportional to 274,516.68, 378,779.16 and 172,483.03

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Solution

The fourth proportional to 274,516.68, 378,779.16 and 172,483.03 is: 237,992.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,516.68 : 378,779.16 = 172,483.03 : x
  2. Step 2: Convert to fraction form
    274,516.68/378,779.16 = 172,483.03/x
  3. Step 3: Cross multiply
    274,516.68x = 378,779.16 × 172,483.03
  4. Step 4: Simplify right side
    274,516.68x = 65,332,977,217.65
  5. Step 5: Solve for x
    x = 65,332,977,217.65/274,516.68
  6. Step 6: Final answer
    x = 237,992.74

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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.