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Finding the Fourth Proportional to 522,039.60, 782,427.60 and 221,890.05

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Solution

The fourth proportional to 522,039.60, 782,427.60 and 221,890.05 is: 332,566.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,039.60 : 782,427.60 = 221,890.05 : x
  2. Step 2: Convert to fraction form
    522,039.60/782,427.60 = 221,890.05/x
  3. Step 3: Cross multiply
    522,039.60x = 782,427.60 × 221,890.05
  4. Step 4: Simplify right side
    522,039.60x = 173,612,899,285.38
  5. Step 5: Solve for x
    x = 173,612,899,285.38/522,039.60
  6. Step 6: Final answer
    x = 332,566.53

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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.