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Finding the Fourth Proportional to 437,643.60, 656,455.80 and 122,091.60

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Solution

The fourth proportional to 437,643.60, 656,455.80 and 122,091.60 is: 183,134.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,643.60 : 656,455.80 = 122,091.60 : x
  2. Step 2: Convert to fraction form
    437,643.60/656,455.80 = 122,091.60/x
  3. Step 3: Cross multiply
    437,643.60x = 656,455.80 × 122,091.60
  4. Step 4: Simplify right side
    437,643.60x = 80,147,738,951.28
  5. Step 5: Solve for x
    x = 80,147,738,951.28/437,643.60
  6. Step 6: Final answer
    x = 183,134.72

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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.