Home / 409,933.11-565,708.46-228,656.78

Finding the Fourth Proportional to 409,933.11, 565,708.46 and 228,656.78

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Solution

The fourth proportional to 409,933.11, 565,708.46 and 228,656.78 is: 315,546.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,933.11 : 565,708.46 = 228,656.78 : x
  2. Step 2: Convert to fraction form
    409,933.11/565,708.46 = 228,656.78/x
  3. Step 3: Cross multiply
    409,933.11x = 565,708.46 × 228,656.78
  4. Step 4: Simplify right side
    409,933.11x = 129,353,072,053.82
  5. Step 5: Solve for x
    x = 129,353,072,053.82/409,933.11
  6. Step 6: Final answer
    x = 315,546.78

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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.