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Finding the Fourth Proportional to 439,426.80, 659,101.80 and 143,938.80

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Solution

The fourth proportional to 439,426.80, 659,101.80 and 143,938.80 is: 215,895.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,426.80 : 659,101.80 = 143,938.80 : x
  2. Step 2: Convert to fraction form
    439,426.80/659,101.80 = 143,938.80/x
  3. Step 3: Cross multiply
    439,426.80x = 659,101.80 × 143,938.80
  4. Step 4: Simplify right side
    439,426.80x = 94,870,322,169.84
  5. Step 5: Solve for x
    x = 94,870,322,169.84/439,426.80
  6. Step 6: Final answer
    x = 215,895.62

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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.