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Finding the Fourth Proportional to 343,626.76, 515,433.78 and 141,179.92

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Solution

The fourth proportional to 343,626.76, 515,433.78 and 141,179.92 is: 211,767.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,626.76 : 515,433.78 = 141,179.92 : x
  2. Step 2: Convert to fraction form
    343,626.76/515,433.78 = 141,179.92/x
  3. Step 3: Cross multiply
    343,626.76x = 515,433.78 × 141,179.92
  4. Step 4: Simplify right side
    343,626.76x = 72,768,899,825.70
  5. Step 5: Solve for x
    x = 72,768,899,825.70/343,626.76
  6. Step 6: Final answer
    x = 211,767.27

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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.