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Finding the Fourth Proportional to 335,423.28, 503,134.92 and 86,105.28

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Solution

The fourth proportional to 335,423.28, 503,134.92 and 86,105.28 is: 129,157.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,423.28 : 503,134.92 = 86,105.28 : x
  2. Step 2: Convert to fraction form
    335,423.28/503,134.92 = 86,105.28/x
  3. Step 3: Cross multiply
    335,423.28x = 503,134.92 × 86,105.28
  4. Step 4: Simplify right side
    335,423.28x = 43,322,573,164.38
  5. Step 5: Solve for x
    x = 43,322,573,164.38/335,423.28
  6. Step 6: Final answer
    x = 129,157.92

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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.