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Finding the Fourth Proportional to 324,063.90, 485,512.65 and 277,407.90

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Solution

The fourth proportional to 324,063.90, 485,512.65 and 277,407.90 is: 415,612.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,063.90 : 485,512.65 = 277,407.90 : x
  2. Step 2: Convert to fraction form
    324,063.90/485,512.65 = 277,407.90/x
  3. Step 3: Cross multiply
    324,063.90x = 485,512.65 × 277,407.90
  4. Step 4: Simplify right side
    324,063.90x = 134,685,044,659.94
  5. Step 5: Solve for x
    x = 134,685,044,659.94/324,063.90
  6. Step 6: Final answer
    x = 415,612.61

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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.