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Finding the Fourth Proportional to 307,709.25, 424,609.98 and 178,613.46

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Solution

The fourth proportional to 307,709.25, 424,609.98 and 178,613.46 is: 246,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,709.25 : 424,609.98 = 178,613.46 : x
  2. Step 2: Convert to fraction form
    307,709.25/424,609.98 = 178,613.46/x
  3. Step 3: Cross multiply
    307,709.25x = 424,609.98 × 178,613.46
  4. Step 4: Simplify right side
    307,709.25x = 75,841,057,678.33
  5. Step 5: Solve for x
    x = 75,841,057,678.33/307,709.25
  6. Step 6: Final answer
    x = 246,469.87

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1.5x scale

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.