Home / 208,015,307.40-312,022,961.10-100,519,883.40

Finding the Fourth Proportional to 208,015,307.40, 312,022,961.10 and 100,519,883.40

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Solution

The fourth proportional to 208,015,307.40, 312,022,961.10 and 100,519,883.40 is: 150,779,825.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015,307.40 : 312,022,961.10 = 100,519,883.40 : x
  2. Step 2: Convert to fraction form
    208,015,307.40/312,022,961.10 = 100,519,883.40/x
  3. Step 3: Cross multiply
    208,015,307.40x = 312,022,961.10 × 100,519,883.40
  4. Step 4: Simplify right side
    208,015,307.40x = 31,364,511,667,894,740
  5. Step 5: Solve for x
    x = 31,364,511,667,894,740/208,015,307.40
  6. Step 6: Final answer
    x = 150,779,825.10

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1.5x scale

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.