Home / 208,216,169.29-312,324,234.95-91,631,525.30

Finding the Fourth Proportional to 208,216,169.29, 312,324,234.95 and 91,631,525.30

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Solution

The fourth proportional to 208,216,169.29, 312,324,234.95 and 91,631,525.30 is: 137,447,279.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,216,169.29 : 312,324,234.95 = 91,631,525.30 : x
  2. Step 2: Convert to fraction form
    208,216,169.29/312,324,234.95 = 91,631,525.30/x
  3. Step 3: Cross multiply
    208,216,169.29x = 312,324,234.95 × 91,631,525.30
  4. Step 4: Simplify right side
    208,216,169.29x = 28,618,746,036,462,740
  5. Step 5: Solve for x
    x = 28,618,746,036,462,740/208,216,169.29
  6. Step 6: Final answer
    x = 137,447,279.59

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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.