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Finding the Fourth Proportional to 291,709.60, 437,564.40 and 220,850.80

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Solution

The fourth proportional to 291,709.60, 437,564.40 and 220,850.80 is: 331,276.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,709.60 : 437,564.40 = 220,850.80 : x
  2. Step 2: Convert to fraction form
    291,709.60/437,564.40 = 220,850.80/x
  3. Step 3: Cross multiply
    291,709.60x = 437,564.40 × 220,850.80
  4. Step 4: Simplify right side
    291,709.60x = 96,636,447,791.52
  5. Step 5: Solve for x
    x = 96,636,447,791.52/291,709.60
  6. Step 6: Final answer
    x = 331,276.20

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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.