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Finding the Fourth Proportional to 664,311.60, 996,305.40 and 190,947.60

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Solution

The fourth proportional to 664,311.60, 996,305.40 and 190,947.60 is: 286,374.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,311.60 : 996,305.40 = 190,947.60 : x
  2. Step 2: Convert to fraction form
    664,311.60/996,305.40 = 190,947.60/x
  3. Step 3: Cross multiply
    664,311.60x = 996,305.40 × 190,947.60
  4. Step 4: Simplify right side
    664,311.60x = 190,242,124,997.04
  5. Step 5: Solve for x
    x = 190,242,124,997.04/664,311.60
  6. Step 6: Final answer
    x = 286,374.84

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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.