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Finding the Fourth Proportional to 439,209.60, 659,428.80 and 273,321.60

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Solution

The fourth proportional to 439,209.60, 659,428.80 and 273,321.60 is: 410,364.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,209.60 : 659,428.80 = 273,321.60 : x
  2. Step 2: Convert to fraction form
    439,209.60/659,428.80 = 273,321.60/x
  3. Step 3: Cross multiply
    439,209.60x = 659,428.80 × 273,321.60
  4. Step 4: Simplify right side
    439,209.60x = 180,236,134,702.08
  5. Step 5: Solve for x
    x = 180,236,134,702.08/439,209.60
  6. Step 6: Final answer
    x = 410,364.74

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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.