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Finding the Fourth Proportional to 335,816.40, 503,287.20 and 135,973.20

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Solution

The fourth proportional to 335,816.40, 503,287.20 and 135,973.20 is: 203,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,816.40 : 503,287.20 = 135,973.20 : x
  2. Step 2: Convert to fraction form
    335,816.40/503,287.20 = 135,973.20/x
  3. Step 3: Cross multiply
    335,816.40x = 503,287.20 × 135,973.20
  4. Step 4: Simplify right side
    335,816.40x = 68,433,571,103.04
  5. Step 5: Solve for x
    x = 68,433,571,103.04/335,816.40
  6. Step 6: Final answer
    x = 203,782.70

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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.