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Finding the Fourth Proportional to 383,070.52, 528,626.48 and 208,636.76

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Solution

The fourth proportional to 383,070.52, 528,626.48 and 208,636.76 is: 287,912.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,070.52 : 528,626.48 = 208,636.76 : x
  2. Step 2: Convert to fraction form
    383,070.52/528,626.48 = 208,636.76/x
  3. Step 3: Cross multiply
    383,070.52x = 528,626.48 × 208,636.76
  4. Step 4: Simplify right side
    383,070.52x = 110,290,916,037.41
  5. Step 5: Solve for x
    x = 110,290,916,037.41/383,070.52
  6. Step 6: Final answer
    x = 287,912.83

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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.