Home / 218,655,515.70-328,066,109.82-131,278,051.98

Finding the Fourth Proportional to 218,655,515.70, 328,066,109.82 and 131,278,051.98

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Solution

The fourth proportional to 218,655,515.70, 328,066,109.82 and 131,278,051.98 is: 196,966,811.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,655,515.70 : 328,066,109.82 = 131,278,051.98 : x
  2. Step 2: Convert to fraction form
    218,655,515.70/328,066,109.82 = 131,278,051.98/x
  3. Step 3: Cross multiply
    218,655,515.70x = 328,066,109.82 × 131,278,051.98
  4. Step 4: Simplify right side
    218,655,515.70x = 43,067,879,817,826,352
  5. Step 5: Solve for x
    x = 43,067,879,817,826,352/218,655,515.70
  6. Step 6: Final answer
    x = 196,966,811.84

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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.