Home / 402,131,814-554,986,944.60-243,449,401.20

Finding the Fourth Proportional to 402,131,814, 554,986,944.60 and 243,449,401.20

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Solution

The fourth proportional to 402,131,814, 554,986,944.60 and 243,449,401.20 is: 335,987,441.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,131,814 : 554,986,944.60 = 243,449,401.20 : x
  2. Step 2: Convert to fraction form
    402,131,814/554,986,944.60 = 243,449,401.20/x
  3. Step 3: Cross multiply
    402,131,814x = 554,986,944.60 × 243,449,401.20
  4. Step 4: Simplify right side
    402,131,814x = 135,111,239,336,687,568
  5. Step 5: Solve for x
    x = 135,111,239,336,687,568/402,131,814
  6. Step 6: Final answer
    x = 335,987,441.51

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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.