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Finding the Fourth Proportional to 348,538.60, 521,511.90 and 255,226.60

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Solution

The fourth proportional to 348,538.60, 521,511.90 and 255,226.60 is: 381,890.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,538.60 : 521,511.90 = 255,226.60 : x
  2. Step 2: Convert to fraction form
    348,538.60/521,511.90 = 255,226.60/x
  3. Step 3: Cross multiply
    348,538.60x = 521,511.90 × 255,226.60
  4. Step 4: Simplify right side
    348,538.60x = 133,103,709,096.54
  5. Step 5: Solve for x
    x = 133,103,709,096.54/348,538.60
  6. Step 6: Final answer
    x = 381,890.87

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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.