Home / 378,039.64-521,770.26-217,003.60

Finding the Fourth Proportional to 378,039.64, 521,770.26 and 217,003.60

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Solution

The fourth proportional to 378,039.64, 521,770.26 and 217,003.60 is: 299,508.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,039.64 : 521,770.26 = 217,003.60 : x
  2. Step 2: Convert to fraction form
    378,039.64/521,770.26 = 217,003.60/x
  3. Step 3: Cross multiply
    378,039.64x = 521,770.26 × 217,003.60
  4. Step 4: Simplify right side
    378,039.64x = 113,226,024,792.94
  5. Step 5: Solve for x
    x = 113,226,024,792.94/378,039.64
  6. Step 6: Final answer
    x = 299,508.34

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1.5x scale

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.