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Finding the Fourth Proportional to 214,624,954.80, 321,954,928.20 and 91,804,201.20

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Solution

The fourth proportional to 214,624,954.80, 321,954,928.20 and 91,804,201.20 is: 137,713,785.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,624,954.80 : 321,954,928.20 = 91,804,201.20 : x
  2. Step 2: Convert to fraction form
    214,624,954.80/321,954,928.20 = 91,804,201.20/x
  3. Step 3: Cross multiply
    214,624,954.80x = 321,954,928.20 × 91,804,201.20
  4. Step 4: Simplify right side
    214,624,954.80x = 29,556,815,005,804,352
  5. Step 5: Solve for x
    x = 29,556,815,005,804,352/214,624,954.80
  6. Step 6: Final answer
    x = 137,713,785.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.