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Finding the Fourth Proportional to 547,819.60, 821,664.60 and 148,435.60

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Solution

The fourth proportional to 547,819.60, 821,664.60 and 148,435.60 is: 222,635.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,819.60 : 821,664.60 = 148,435.60 : x
  2. Step 2: Convert to fraction form
    547,819.60/821,664.60 = 148,435.60/x
  3. Step 3: Cross multiply
    547,819.60x = 821,664.60 × 148,435.60
  4. Step 4: Simplify right side
    547,819.60x = 121,964,277,899.76
  5. Step 5: Solve for x
    x = 121,964,277,899.76/547,819.60
  6. Step 6: Final answer
    x = 222,635.84

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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.