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Finding the Fourth Proportional to 439,879.20, 659,381.40 and 202,808.40

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Solution

The fourth proportional to 439,879.20, 659,381.40 and 202,808.40 is: 304,010.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,879.20 : 659,381.40 = 202,808.40 : x
  2. Step 2: Convert to fraction form
    439,879.20/659,381.40 = 202,808.40/x
  3. Step 3: Cross multiply
    439,879.20x = 659,381.40 × 202,808.40
  4. Step 4: Simplify right side
    439,879.20x = 133,728,086,723.76
  5. Step 5: Solve for x
    x = 133,728,086,723.76/439,879.20
  6. Step 6: Final answer
    x = 304,010.93

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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.