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Finding the Fourth Proportional to 574,505.57, 861,817.35 and 219,817.91

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Solution

The fourth proportional to 574,505.57, 861,817.35 and 219,817.91 is: 329,749.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,505.57 : 861,817.35 = 219,817.91 : x
  2. Step 2: Convert to fraction form
    574,505.57/861,817.35 = 219,817.91/x
  3. Step 3: Cross multiply
    574,505.57x = 861,817.35 × 219,817.91
  4. Step 4: Simplify right side
    574,505.57x = 189,442,888,678.74
  5. Step 5: Solve for x
    x = 189,442,888,678.74/574,505.57
  6. Step 6: Final answer
    x = 329,749.44

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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.