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Finding the Fourth Proportional to 291,464.60, 437,212.49 and 91,800.54

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Solution

The fourth proportional to 291,464.60, 437,212.49 and 91,800.54 is: 137,705.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,464.60 : 437,212.49 = 91,800.54 : x
  2. Step 2: Convert to fraction form
    291,464.60/437,212.49 = 91,800.54/x
  3. Step 3: Cross multiply
    291,464.60x = 437,212.49 × 91,800.54
  4. Step 4: Simplify right side
    291,464.60x = 40,136,342,217.74
  5. Step 5: Solve for x
    x = 40,136,342,217.74/291,464.60
  6. Step 6: Final answer
    x = 137,705.72

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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.