Home / 318,947,097.12-440,147,290.64-172,269,381.12

Finding the Fourth Proportional to 318,947,097.12, 440,147,290.64 and 172,269,381.12

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Solution

The fourth proportional to 318,947,097.12, 440,147,290.64 and 172,269,381.12 is: 237,731,906.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,947,097.12 : 440,147,290.64 = 172,269,381.12 : x
  2. Step 2: Convert to fraction form
    318,947,097.12/440,147,290.64 = 172,269,381.12/x
  3. Step 3: Cross multiply
    318,947,097.12x = 440,147,290.64 × 172,269,381.12
  4. Step 4: Simplify right side
    318,947,097.12x = 75,823,901,360,197,568
  5. Step 5: Solve for x
    x = 75,823,901,360,197,568/318,947,097.12
  6. Step 6: Final answer
    x = 237,731,906.15

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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.