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Finding the Fourth Proportional to 439,967.80, 659,822.10 and 173,639.80

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Solution

The fourth proportional to 439,967.80, 659,822.10 and 173,639.80 is: 260,408.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,967.80 : 659,822.10 = 173,639.80 : x
  2. Step 2: Convert to fraction form
    439,967.80/659,822.10 = 173,639.80/x
  3. Step 3: Cross multiply
    439,967.80x = 659,822.10 × 173,639.80
  4. Step 4: Simplify right side
    439,967.80x = 114,571,377,479.58
  5. Step 5: Solve for x
    x = 114,571,377,479.58/439,967.80
  6. Step 6: Final answer
    x = 260,408.55

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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.