Home / 208,015,504.90-312,023,257.35-100,520,080.90

Finding the Fourth Proportional to 208,015,504.90, 312,023,257.35 and 100,520,080.90

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Solution

The fourth proportional to 208,015,504.90, 312,023,257.35 and 100,520,080.90 is: 150,780,121.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015,504.90 : 312,023,257.35 = 100,520,080.90 : x
  2. Step 2: Convert to fraction form
    208,015,504.90/312,023,257.35 = 100,520,080.90/x
  3. Step 3: Cross multiply
    208,015,504.90x = 312,023,257.35 × 100,520,080.90
  4. Step 4: Simplify right side
    208,015,504.90x = 31,364,603,071,503,524
  5. Step 5: Solve for x
    x = 31,364,603,071,503,524/208,015,504.90
  6. Step 6: Final answer
    x = 150,780,121.35

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Similar ratio
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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.