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Finding the Fourth Proportional to 285,394.62, 393,847.47 and 172,195.50

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Solution

The fourth proportional to 285,394.62, 393,847.47 and 172,195.50 is: 237,631.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,394.62 : 393,847.47 = 172,195.50 : x
  2. Step 2: Convert to fraction form
    285,394.62/393,847.47 = 172,195.50/x
  3. Step 3: Cross multiply
    285,394.62x = 393,847.47 × 172,195.50
  4. Step 4: Simplify right side
    285,394.62x = 67,818,762,020.39
  5. Step 5: Solve for x
    x = 67,818,762,020.39/285,394.62
  6. Step 6: Final answer
    x = 237,631.54

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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.