Home / 212,744,713.75-318,462,558.12-138,809,292.57

Finding the Fourth Proportional to 212,744,713.75, 318,462,558.12 and 138,809,292.57

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Solution

The fourth proportional to 212,744,713.75, 318,462,558.12 and 138,809,292.57 is: 207,786,889.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,744,713.75 : 318,462,558.12 = 138,809,292.57 : x
  2. Step 2: Convert to fraction form
    212,744,713.75/318,462,558.12 = 138,809,292.57/x
  3. Step 3: Cross multiply
    212,744,713.75x = 318,462,558.12 × 138,809,292.57
  4. Step 4: Simplify right side
    212,744,713.75x = 44,205,562,402,669,704
  5. Step 5: Solve for x
    x = 44,205,562,402,669,704/212,744,713.75
  6. Step 6: Final answer
    x = 207,786,889.85

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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.