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Finding the Fourth Proportional to 335,496.75, 503,245.13 and 86,178.75

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Solution

The fourth proportional to 335,496.75, 503,245.13 and 86,178.75 is: 129,268.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,496.75 : 503,245.13 = 86,178.75 : x
  2. Step 2: Convert to fraction form
    335,496.75/503,245.13 = 86,178.75/x
  3. Step 3: Cross multiply
    335,496.75x = 503,245.13 × 86,178.75
  4. Step 4: Simplify right side
    335,496.75x = 43,369,035,816.09
  5. Step 5: Solve for x
    x = 43,369,035,816.09/335,496.75
  6. Step 6: Final answer
    x = 129,268.13

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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.