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Finding the Fourth Proportional to 439,628.40, 659,661.30 and 173,397.60

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Solution

The fourth proportional to 439,628.40, 659,661.30 and 173,397.60 is: 260,182.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,628.40 : 659,661.30 = 173,397.60 : x
  2. Step 2: Convert to fraction form
    439,628.40/659,661.30 = 173,397.60/x
  3. Step 3: Cross multiply
    439,628.40x = 659,661.30 × 173,397.60
  4. Step 4: Simplify right side
    439,628.40x = 114,383,686,232.88
  5. Step 5: Solve for x
    x = 114,383,686,232.88/439,628.40
  6. Step 6: Final answer
    x = 260,182.66

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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.