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Finding the Fourth Proportional to 439,634.80, 659,439.84 and 140,133.34

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Solution

The fourth proportional to 439,634.80, 659,439.84 and 140,133.34 is: 210,196.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,634.80 : 659,439.84 = 140,133.34 : x
  2. Step 2: Convert to fraction form
    439,634.80/659,439.84 = 140,133.34/x
  3. Step 3: Cross multiply
    439,634.80x = 659,439.84 × 140,133.34
  4. Step 4: Simplify right side
    439,634.80x = 92,409,507,308.27
  5. Step 5: Solve for x
    x = 92,409,507,308.27/439,634.80
  6. Step 6: Final answer
    x = 210,196.07

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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.