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Finding the Fourth Proportional to 408,042.60, 612,063.90 and 141,714.60

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Solution

The fourth proportional to 408,042.60, 612,063.90 and 141,714.60 is: 212,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,042.60 : 612,063.90 = 141,714.60 : x
  2. Step 2: Convert to fraction form
    408,042.60/612,063.90 = 141,714.60/x
  3. Step 3: Cross multiply
    408,042.60x = 612,063.90 × 141,714.60
  4. Step 4: Simplify right side
    408,042.60x = 86,738,390,762.94
  5. Step 5: Solve for x
    x = 86,738,390,762.94/408,042.60
  6. Step 6: Final answer
    x = 212,571.90

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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.