Home / 389,647,300.80-537,694,167.24-213,436,077.96

Finding the Fourth Proportional to 389,647,300.80, 537,694,167.24 and 213,436,077.96

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Solution

The fourth proportional to 389,647,300.80, 537,694,167.24 and 213,436,077.96 is: 294,531,320.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,647,300.80 : 537,694,167.24 = 213,436,077.96 : x
  2. Step 2: Convert to fraction form
    389,647,300.80/537,694,167.24 = 213,436,077.96/x
  3. Step 3: Cross multiply
    389,647,300.80x = 537,694,167.24 × 213,436,077.96
  4. Step 4: Simplify right side
    389,647,300.80x = 114,763,334,197,673,920
  5. Step 5: Solve for x
    x = 114,763,334,197,673,920/389,647,300.80
  6. Step 6: Final answer
    x = 294,531,320.92

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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.