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Finding the Fourth Proportional to 511,361.28, 766,968.05 and 156,279.96

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Solution

The fourth proportional to 511,361.28, 766,968.05 and 156,279.96 is: 234,397.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,361.28 : 766,968.05 = 156,279.96 : x
  2. Step 2: Convert to fraction form
    511,361.28/766,968.05 = 156,279.96/x
  3. Step 3: Cross multiply
    511,361.28x = 766,968.05 × 156,279.96
  4. Step 4: Simplify right side
    511,361.28x = 119,861,735,393.88
  5. Step 5: Solve for x
    x = 119,861,735,393.88/511,361.28
  6. Step 6: Final answer
    x = 234,397.36

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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.