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Finding the Fourth Proportional to 553,840.60, 830,517.90 and 254,221.60

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Solution

The fourth proportional to 553,840.60, 830,517.90 and 254,221.60 is: 381,220.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,840.60 : 830,517.90 = 254,221.60 : x
  2. Step 2: Convert to fraction form
    553,840.60/830,517.90 = 254,221.60/x
  3. Step 3: Cross multiply
    553,840.60x = 830,517.90 × 254,221.60
  4. Step 4: Simplify right side
    553,840.60x = 211,135,589,366.64
  5. Step 5: Solve for x
    x = 211,135,589,366.64/553,840.60
  6. Step 6: Final answer
    x = 381,220.86

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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.