Home / 378,236.16-521,928.52-225,243.92

Finding the Fourth Proportional to 378,236.16, 521,928.52 and 225,243.92

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Solution

The fourth proportional to 378,236.16, 521,928.52 and 225,243.92 is: 310,814.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,236.16 : 521,928.52 = 225,243.92 : x
  2. Step 2: Convert to fraction form
    378,236.16/521,928.52 = 225,243.92/x
  3. Step 3: Cross multiply
    378,236.16x = 521,928.52 × 225,243.92
  4. Step 4: Simplify right side
    378,236.16x = 117,561,225,804.60
  5. Step 5: Solve for x
    x = 117,561,225,804.60/378,236.16
  6. Step 6: Final answer
    x = 310,814.35

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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.