Home / 378,110.50-521,803.43-208,355.56

Finding the Fourth Proportional to 378,110.50, 521,803.43 and 208,355.56

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Solution

The fourth proportional to 378,110.50, 521,803.43 and 208,355.56 is: 287,536.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,110.50 : 521,803.43 = 208,355.56 : x
  2. Step 2: Convert to fraction form
    378,110.50/521,803.43 = 208,355.56/x
  3. Step 3: Cross multiply
    378,110.50x = 521,803.43 × 208,355.56
  4. Step 4: Simplify right side
    378,110.50x = 108,720,645,867.57
  5. Step 5: Solve for x
    x = 108,720,645,867.57/378,110.50
  6. Step 6: Final answer
    x = 287,536.70

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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.