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Finding the Fourth Proportional to 519,404.80, 778,492.80 and 219,884.80

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Solution

The fourth proportional to 519,404.80, 778,492.80 and 219,884.80 is: 329,567.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,404.80 : 778,492.80 = 219,884.80 : x
  2. Step 2: Convert to fraction form
    519,404.80/778,492.80 = 219,884.80/x
  3. Step 3: Cross multiply
    519,404.80x = 778,492.80 × 219,884.80
  4. Step 4: Simplify right side
    519,404.80x = 171,178,733,629.44
  5. Step 5: Solve for x
    x = 171,178,733,629.44/519,404.80
  6. Step 6: Final answer
    x = 329,567.10

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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.