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Finding the Fourth Proportional to 426,757.66, 639,720.44 and 170,513.84

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Solution

The fourth proportional to 426,757.66, 639,720.44 and 170,513.84 is: 255,604.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,757.66 : 639,720.44 = 170,513.84 : x
  2. Step 2: Convert to fraction form
    426,757.66/639,720.44 = 170,513.84/x
  3. Step 3: Cross multiply
    426,757.66x = 639,720.44 × 170,513.84
  4. Step 4: Simplify right side
    426,757.66x = 109,081,188,750.89
  5. Step 5: Solve for x
    x = 109,081,188,750.89/426,757.66
  6. Step 6: Final answer
    x = 255,604.52

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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.