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Finding the Fourth Proportional to 574,504.57, 861,815.85 and 219,816.91

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Solution

The fourth proportional to 574,504.57, 861,815.85 and 219,816.91 is: 329,747.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,504.57 : 861,815.85 = 219,816.91 : x
  2. Step 2: Convert to fraction form
    574,504.57/861,815.85 = 219,816.91/x
  3. Step 3: Cross multiply
    574,504.57x = 861,815.85 × 219,816.91
  4. Step 4: Simplify right side
    574,504.57x = 189,441,697,136.02
  5. Step 5: Solve for x
    x = 189,441,697,136.02/574,504.57
  6. Step 6: Final answer
    x = 329,747.94

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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.