Home / 208,530,209.20-312,907,288.20-87,373,908.40

Finding the Fourth Proportional to 208,530,209.20, 312,907,288.20 and 87,373,908.40

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Solution

The fourth proportional to 208,530,209.20, 312,907,288.20 and 87,373,908.40 is: 131,107,779.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,530,209.20 : 312,907,288.20 = 87,373,908.40 : x
  2. Step 2: Convert to fraction form
    208,530,209.20/312,907,288.20 = 87,373,908.40/x
  3. Step 3: Cross multiply
    208,530,209.20x = 312,907,288.20 × 87,373,908.40
  4. Step 4: Simplify right side
    208,530,209.20x = 27,339,932,736,879,200
  5. Step 5: Solve for x
    x = 27,339,932,736,879,200/208,530,209.20
  6. Step 6: Final answer
    x = 131,107,779.74

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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.