Home / 285,122,946.20-393,469,825.84-154,742,754.20

Finding the Fourth Proportional to 285,122,946.20, 393,469,825.84 and 154,742,754.20

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Solution

The fourth proportional to 285,122,946.20, 393,469,825.84 and 154,742,754.20 is: 213,545,087.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,122,946.20 : 393,469,825.84 = 154,742,754.20 : x
  2. Step 2: Convert to fraction form
    285,122,946.20/393,469,825.84 = 154,742,754.20/x
  3. Step 3: Cross multiply
    285,122,946.20x = 393,469,825.84 × 154,742,754.20
  4. Step 4: Simplify right side
    285,122,946.20x = 60,886,604,542,721,720
  5. Step 5: Solve for x
    x = 60,886,604,542,721,720/285,122,946.20
  6. Step 6: Final answer
    x = 213,545,087.67

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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.