Home / 208,015,307.90-312,022,961.85-100,519,883.90

Finding the Fourth Proportional to 208,015,307.90, 312,022,961.85 and 100,519,883.90

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Solution

The fourth proportional to 208,015,307.90, 312,022,961.85 and 100,519,883.90 is: 150,779,825.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015,307.90 : 312,022,961.85 = 100,519,883.90 : x
  2. Step 2: Convert to fraction form
    208,015,307.90/312,022,961.85 = 100,519,883.90/x
  3. Step 3: Cross multiply
    208,015,307.90x = 312,022,961.85 × 100,519,883.90
  4. Step 4: Simplify right side
    208,015,307.90x = 31,364,511,899,296,132
  5. Step 5: Solve for x
    x = 31,364,511,899,296,132/208,015,307.90
  6. Step 6: Final answer
    x = 150,779,825.85

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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.