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Finding the Fourth Proportional to 354,228.34, 488,844.42 and 218,352.08

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Solution

The fourth proportional to 354,228.34, 488,844.42 and 218,352.08 is: 301,331.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,228.34 : 488,844.42 = 218,352.08 : x
  2. Step 2: Convert to fraction form
    354,228.34/488,844.42 = 218,352.08/x
  3. Step 3: Cross multiply
    354,228.34x = 488,844.42 × 218,352.08
  4. Step 4: Simplify right side
    354,228.34x = 106,740,195,903.39
  5. Step 5: Solve for x
    x = 106,740,195,903.39/354,228.34
  6. Step 6: Final answer
    x = 301,331.61

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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.