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Finding the Fourth Proportional to 354,266.87, 488,897.37 and 218,390.58

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Solution

The fourth proportional to 354,266.87, 488,897.37 and 218,390.58 is: 301,384.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,266.87 : 488,897.37 = 218,390.58 : x
  2. Step 2: Convert to fraction form
    354,266.87/488,897.37 = 218,390.58/x
  3. Step 3: Cross multiply
    354,266.87x = 488,897.37 × 218,390.58
  4. Step 4: Simplify right side
    354,266.87x = 106,770,580,194.78
  5. Step 5: Solve for x
    x = 106,770,580,194.78/354,266.87
  6. Step 6: Final answer
    x = 301,384.61

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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.