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Finding the Fourth Proportional to 260,563.89, 390,787.00 and 132,350.32

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Solution

The fourth proportional to 260,563.89, 390,787.00 and 132,350.32 is: 198,495.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,563.89 : 390,787.00 = 132,350.32 : x
  2. Step 2: Convert to fraction form
    260,563.89/390,787.00 = 132,350.32/x
  3. Step 3: Cross multiply
    260,563.89x = 390,787.00 × 132,350.32
  4. Step 4: Simplify right side
    260,563.89x = 51,720,783,194.00
  5. Step 5: Solve for x
    x = 51,720,783,194.00/260,563.89
  6. Step 6: Final answer
    x = 198,495.59

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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.