Home / 281,789,806.82-388,856,758.64-156,340,667.63

Finding the Fourth Proportional to 281,789,806.82, 388,856,758.64 and 156,340,667.63

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Solution

The fourth proportional to 281,789,806.82, 388,856,758.64 and 156,340,667.63 is: 215,742,811.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,789,806.82 : 388,856,758.64 = 156,340,667.63 : x
  2. Step 2: Convert to fraction form
    281,789,806.82/388,856,758.64 = 156,340,667.63/x
  3. Step 3: Cross multiply
    281,789,806.82x = 388,856,758.64 × 156,340,667.63
  4. Step 4: Simplify right side
    281,789,806.82x = 60,794,125,258,405,808
  5. Step 5: Solve for x
    x = 60,794,125,258,405,808/281,789,806.82
  6. Step 6: Final answer
    x = 215,742,811.80

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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.