Home / 318,947,095.12-440,147,287.87-172,269,379.12

Finding the Fourth Proportional to 318,947,095.12, 440,147,287.87 and 172,269,379.12

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Solution

The fourth proportional to 318,947,095.12, 440,147,287.87 and 172,269,379.12 is: 237,731,903.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,947,095.12 : 440,147,287.87 = 172,269,379.12 : x
  2. Step 2: Convert to fraction form
    318,947,095.12/440,147,287.87 = 172,269,379.12/x
  3. Step 3: Cross multiply
    318,947,095.12x = 440,147,287.87 × 172,269,379.12
  4. Step 4: Simplify right side
    318,947,095.12x = 75,823,900,002,716,816
  5. Step 5: Solve for x
    x = 75,823,900,002,716,816/318,947,095.12
  6. Step 6: Final answer
    x = 237,731,903.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.