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Finding the Fourth Proportional to 400,448.79, 552,619.59 and 219,160.66

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Solution

The fourth proportional to 400,448.79, 552,619.59 and 219,160.66 is: 302,441.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,448.79 : 552,619.59 = 219,160.66 : x
  2. Step 2: Convert to fraction form
    400,448.79/552,619.59 = 219,160.66/x
  3. Step 3: Cross multiply
    400,448.79x = 552,619.59 × 219,160.66
  4. Step 4: Simplify right side
    400,448.79x = 121,112,474,073.33
  5. Step 5: Solve for x
    x = 121,112,474,073.33/400,448.79
  6. Step 6: Final answer
    x = 302,441.85

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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.