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Finding the Fourth Proportional to 253,884.38, 350,358.26 and 139,169.40

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Solution

The fourth proportional to 253,884.38, 350,358.26 and 139,169.40 is: 192,052.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,884.38 : 350,358.26 = 139,169.40 : x
  2. Step 2: Convert to fraction form
    253,884.38/350,358.26 = 139,169.40/x
  3. Step 3: Cross multiply
    253,884.38x = 350,358.26 × 139,169.40
  4. Step 4: Simplify right side
    253,884.38x = 48,759,148,829.24
  5. Step 5: Solve for x
    x = 48,759,148,829.24/253,884.38
  6. Step 6: Final answer
    x = 192,052.57

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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.