Home / 208,015,456.90-312,023,185.35-100,520,032.90

Finding the Fourth Proportional to 208,015,456.90, 312,023,185.35 and 100,520,032.90

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Solution

The fourth proportional to 208,015,456.90, 312,023,185.35 and 100,520,032.90 is: 150,780,049.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015,456.90 : 312,023,185.35 = 100,520,032.90 : x
  2. Step 2: Convert to fraction form
    208,015,456.90/312,023,185.35 = 100,520,032.90/x
  3. Step 3: Cross multiply
    208,015,456.90x = 312,023,185.35 × 100,520,032.90
  4. Step 4: Simplify right side
    208,015,456.90x = 31,364,580,856,944,804
  5. Step 5: Solve for x
    x = 31,364,580,856,944,804/208,015,456.90
  6. Step 6: Final answer
    x = 150,780,049.35

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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.