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Finding the Fourth Proportional to 361,235.72, 541,854.88 and 121,342.78

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Solution

The fourth proportional to 361,235.72, 541,854.88 and 121,342.78 is: 182,014.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,235.72 : 541,854.88 = 121,342.78 : x
  2. Step 2: Convert to fraction form
    361,235.72/541,854.88 = 121,342.78/x
  3. Step 3: Cross multiply
    361,235.72x = 541,854.88 × 121,342.78
  4. Step 4: Simplify right side
    361,235.72x = 65,750,177,495.77
  5. Step 5: Solve for x
    x = 65,750,177,495.77/361,235.72
  6. Step 6: Final answer
    x = 182,014.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.