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Finding the Fourth Proportional to 291,483.76, 437,241.20 and 91,819.80

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Solution

The fourth proportional to 291,483.76, 437,241.20 and 91,819.80 is: 137,734.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,483.76 : 437,241.20 = 91,819.80 : x
  2. Step 2: Convert to fraction form
    291,483.76/437,241.20 = 91,819.80/x
  3. Step 3: Cross multiply
    291,483.76x = 437,241.20 × 91,819.80
  4. Step 4: Simplify right side
    291,483.76x = 40,147,399,535.76
  5. Step 5: Solve for x
    x = 40,147,399,535.76/291,483.76
  6. Step 6: Final answer
    x = 137,734.60

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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.