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Finding the Fourth Proportional to 285,339.92, 393,481.40 and 208,871.46

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Solution

The fourth proportional to 285,339.92, 393,481.40 and 208,871.46 is: 288,032.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,339.92 : 393,481.40 = 208,871.46 : x
  2. Step 2: Convert to fraction form
    285,339.92/393,481.40 = 208,871.46/x
  3. Step 3: Cross multiply
    285,339.92x = 393,481.40 × 208,871.46
  4. Step 4: Simplify right side
    285,339.92x = 82,187,033,456.49
  5. Step 5: Solve for x
    x = 82,187,033,456.49/285,339.92
  6. Step 6: Final answer
    x = 288,032.02

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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.