Home / 400,789.82-553,089.94-219,502.17

Finding the Fourth Proportional to 400,789.82, 553,089.94 and 219,502.17

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Solution

The fourth proportional to 400,789.82, 553,089.94 and 219,502.17 is: 302,912.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,789.82 : 553,089.94 = 219,502.17 : x
  2. Step 2: Convert to fraction form
    400,789.82/553,089.94 = 219,502.17/x
  3. Step 3: Cross multiply
    400,789.82x = 553,089.94 × 219,502.17
  4. Step 4: Simplify right side
    400,789.82x = 121,404,441,486.41
  5. Step 5: Solve for x
    x = 121,404,441,486.41/400,789.82
  6. Step 6: Final answer
    x = 302,912.98

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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.