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Finding the Fourth Proportional to 439,622.40, 659,652.30 and 173,391.60

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Solution

The fourth proportional to 439,622.40, 659,652.30 and 173,391.60 is: 260,173.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,622.40 : 659,652.30 = 173,391.60 : x
  2. Step 2: Convert to fraction form
    439,622.40/659,652.30 = 173,391.60/x
  3. Step 3: Cross multiply
    439,622.40x = 659,652.30 × 173,391.60
  4. Step 4: Simplify right side
    439,622.40x = 114,378,167,740.68
  5. Step 5: Solve for x
    x = 114,378,167,740.68/439,622.40
  6. Step 6: Final answer
    x = 260,173.66

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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.