Home / 285,387.62-393,837.81-172,188.50

Finding the Fourth Proportional to 285,387.62, 393,837.81 and 172,188.50

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Solution

The fourth proportional to 285,387.62, 393,837.81 and 172,188.50 is: 237,621.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,387.62 : 393,837.81 = 172,188.50 : x
  2. Step 2: Convert to fraction form
    285,387.62/393,837.81 = 172,188.50/x
  3. Step 3: Cross multiply
    285,387.62x = 393,837.81 × 172,188.50
  4. Step 4: Simplify right side
    285,387.62x = 67,814,341,747.19
  5. Step 5: Solve for x
    x = 67,814,341,747.19/285,387.62
  6. Step 6: Final answer
    x = 237,621.88

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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.