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Finding the Fourth Proportional to 485,086.60, 727,629.90 and 152,662.60

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Solution

The fourth proportional to 485,086.60, 727,629.90 and 152,662.60 is: 228,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,086.60 : 727,629.90 = 152,662.60 : x
  2. Step 2: Convert to fraction form
    485,086.60/727,629.90 = 152,662.60/x
  3. Step 3: Cross multiply
    485,086.60x = 727,629.90 × 152,662.60
  4. Step 4: Simplify right side
    485,086.60x = 111,081,872,371.74
  5. Step 5: Solve for x
    x = 111,081,872,371.74/485,086.60
  6. Step 6: Final answer
    x = 228,993.90

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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.