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Finding the Fourth Proportional to 273,875.87, 411,152.09 and 129,919.32

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Solution

The fourth proportional to 273,875.87, 411,152.09 and 129,919.32 is: 195,039.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,875.87 : 411,152.09 = 129,919.32 : x
  2. Step 2: Convert to fraction form
    273,875.87/411,152.09 = 129,919.32/x
  3. Step 3: Cross multiply
    273,875.87x = 411,152.09 × 129,919.32
  4. Step 4: Simplify right side
    273,875.87x = 53,416,599,299.78
  5. Step 5: Solve for x
    x = 53,416,599,299.78/273,875.87
  6. Step 6: Final answer
    x = 195,039.45

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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.