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Finding the Fourth Proportional to 402,380.48, 603,664.08 and 118,059.60

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Solution

The fourth proportional to 402,380.48, 603,664.08 and 118,059.60 is: 177,116.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,380.48 : 603,664.08 = 118,059.60 : x
  2. Step 2: Convert to fraction form
    402,380.48/603,664.08 = 118,059.60/x
  3. Step 3: Cross multiply
    402,380.48x = 603,664.08 × 118,059.60
  4. Step 4: Simplify right side
    402,380.48x = 71,268,339,819.17
  5. Step 5: Solve for x
    x = 71,268,339,819.17/402,380.48
  6. Step 6: Final answer
    x = 177,116.79

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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.