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Finding the Fourth Proportional to 285,215.90, 393,474.39 and 171,975.74

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Solution

The fourth proportional to 285,215.90, 393,474.39 and 171,975.74 is: 237,252.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,215.90 : 393,474.39 = 171,975.74 : x
  2. Step 2: Convert to fraction form
    285,215.90/393,474.39 = 171,975.74/x
  3. Step 3: Cross multiply
    285,215.90x = 393,474.39 × 171,975.74
  4. Step 4: Simplify right side
    285,215.90x = 67,668,049,391.30
  5. Step 5: Solve for x
    x = 67,668,049,391.30/285,215.90
  6. Step 6: Final answer
    x = 237,252.02

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1.5x scale

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.