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Finding the Fourth Proportional to 354,559.29, 531,767.40 and 129,843.01

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Solution

The fourth proportional to 354,559.29, 531,767.40 and 129,843.01 is: 194,738.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,559.29 : 531,767.40 = 129,843.01 : x
  2. Step 2: Convert to fraction form
    354,559.29/531,767.40 = 129,843.01/x
  3. Step 3: Cross multiply
    354,559.29x = 531,767.40 × 129,843.01
  4. Step 4: Simplify right side
    354,559.29x = 69,046,279,835.87
  5. Step 5: Solve for x
    x = 69,046,279,835.87/354,559.29
  6. Step 6: Final answer
    x = 194,738.32

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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.