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Finding the Fourth Proportional to 402,093.45, 554,861.39 and 220,817.12

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Solution

The fourth proportional to 402,093.45, 554,861.39 and 220,817.12 is: 304,712.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,093.45 : 554,861.39 = 220,817.12 : x
  2. Step 2: Convert to fraction form
    402,093.45/554,861.39 = 220,817.12/x
  3. Step 3: Cross multiply
    402,093.45x = 554,861.39 × 220,817.12
  4. Step 4: Simplify right side
    402,093.45x = 122,522,890,260.60
  5. Step 5: Solve for x
    x = 122,522,890,260.60/402,093.45
  6. Step 6: Final answer
    x = 304,712.47

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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.