Home / 208,713,644.80-313,070,467.20-131,115,385.60

Finding the Fourth Proportional to 208,713,644.80, 313,070,467.20 and 131,115,385.60

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Solution

The fourth proportional to 208,713,644.80, 313,070,467.20 and 131,115,385.60 is: 196,673,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,713,644.80 : 313,070,467.20 = 131,115,385.60 : x
  2. Step 2: Convert to fraction form
    208,713,644.80/313,070,467.20 = 131,115,385.60/x
  3. Step 3: Cross multiply
    208,713,644.80x = 313,070,467.20 × 131,115,385.60
  4. Step 4: Simplify right side
    208,713,644.80x = 41,048,355,026,900,152
  5. Step 5: Solve for x
    x = 41,048,355,026,900,152/208,713,644.80
  6. Step 6: Final answer
    x = 196,673,078.40

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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.