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Finding the Fourth Proportional to 260,229.92, 390,043.68 and 119,693.60

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Solution

The fourth proportional to 260,229.92, 390,043.68 and 119,693.60 is: 179,401.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,229.92 : 390,043.68 = 119,693.60 : x
  2. Step 2: Convert to fraction form
    260,229.92/390,043.68 = 119,693.60/x
  3. Step 3: Cross multiply
    260,229.92x = 390,043.68 × 119,693.60
  4. Step 4: Simplify right side
    260,229.92x = 46,685,732,216.45
  5. Step 5: Solve for x
    x = 46,685,732,216.45/260,229.92
  6. Step 6: Final answer
    x = 179,401.86

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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.