Home / 208,651,537.20-312,977,305.80-72,291,601.20

Finding the Fourth Proportional to 208,651,537.20, 312,977,305.80 and 72,291,601.20

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Solution

The fourth proportional to 208,651,537.20, 312,977,305.80 and 72,291,601.20 is: 108,437,401.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,651,537.20 : 312,977,305.80 = 72,291,601.20 : x
  2. Step 2: Convert to fraction form
    208,651,537.20/312,977,305.80 = 72,291,601.20/x
  3. Step 3: Cross multiply
    208,651,537.20x = 312,977,305.80 × 72,291,601.20
  4. Step 4: Simplify right side
    208,651,537.20x = 22,625,630,575,544,048
  5. Step 5: Solve for x
    x = 22,625,630,575,544,048/208,651,537.20
  6. Step 6: Final answer
    x = 108,437,401.80

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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.