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Finding the Fourth Proportional to 574,503.57, 861,814.35 and 219,815.91

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Solution

The fourth proportional to 574,503.57, 861,814.35 and 219,815.91 is: 329,746.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,503.57 : 861,814.35 = 219,815.91 : x
  2. Step 2: Convert to fraction form
    574,503.57/861,814.35 = 219,815.91/x
  3. Step 3: Cross multiply
    574,503.57x = 861,814.35 × 219,815.91
  4. Step 4: Simplify right side
    574,503.57x = 189,440,505,596.31
  5. Step 5: Solve for x
    x = 189,440,505,596.31/574,503.57
  6. Step 6: Final answer
    x = 329,746.44

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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.