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Finding the Fourth Proportional to 270,771.54, 405,916.20 and 128,529.06

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Solution

The fourth proportional to 270,771.54, 405,916.20 and 128,529.06 is: 192,679.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,771.54 : 405,916.20 = 128,529.06 : x
  2. Step 2: Convert to fraction form
    270,771.54/405,916.20 = 128,529.06/x
  3. Step 3: Cross multiply
    270,771.54x = 405,916.20 × 128,529.06
  4. Step 4: Simplify right side
    270,771.54x = 52,172,027,624.77
  5. Step 5: Solve for x
    x = 52,172,027,624.77/270,771.54
  6. Step 6: Final answer
    x = 192,679.14

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1.5x scale

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.