Home / 285,212.92-393,596.94-157,890.64

Finding the Fourth Proportional to 285,212.92, 393,596.94 and 157,890.64

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Solution

The fourth proportional to 285,212.92, 393,596.94 and 157,890.64 is: 217,890.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,212.92 : 393,596.94 = 157,890.64 : x
  2. Step 2: Convert to fraction form
    285,212.92/393,596.94 = 157,890.64/x
  3. Step 3: Cross multiply
    285,212.92x = 393,596.94 × 157,890.64
  4. Step 4: Simplify right side
    285,212.92x = 62,145,272,758.64
  5. Step 5: Solve for x
    x = 62,145,272,758.64/285,212.92
  6. Step 6: Final answer
    x = 217,890.81

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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.