Home / 208,607,692.80-312,911,539.20-122,387,404.80

Finding the Fourth Proportional to 208,607,692.80, 312,911,539.20 and 122,387,404.80

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Solution

The fourth proportional to 208,607,692.80, 312,911,539.20 and 122,387,404.80 is: 183,581,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,607,692.80 : 312,911,539.20 = 122,387,404.80 : x
  2. Step 2: Convert to fraction form
    208,607,692.80/312,911,539.20 = 122,387,404.80/x
  3. Step 3: Cross multiply
    208,607,692.80x = 312,911,539.20 × 122,387,404.80
  4. Step 4: Simplify right side
    208,607,692.80x = 38,296,431,214,661,464
  5. Step 5: Solve for x
    x = 38,296,431,214,661,464/208,607,692.80
  6. Step 6: Final answer
    x = 183,581,107.20

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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.