Home / 378,192.60-521,899.74-217,043.91

Finding the Fourth Proportional to 378,192.60, 521,899.74 and 217,043.91

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Solution

The fourth proportional to 378,192.60, 521,899.74 and 217,043.91 is: 299,517.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,192.60 : 521,899.74 = 217,043.91 : x
  2. Step 2: Convert to fraction form
    378,192.60/521,899.74 = 217,043.91/x
  3. Step 3: Cross multiply
    378,192.60x = 521,899.74 × 217,043.91
  4. Step 4: Simplify right side
    378,192.60x = 113,275,160,197.58
  5. Step 5: Solve for x
    x = 113,275,160,197.58/378,192.60
  6. Step 6: Final answer
    x = 299,517.12

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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.