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Finding the Fourth Proportional to 294,546.40, 441,819.60 and 72,930.40

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Solution

The fourth proportional to 294,546.40, 441,819.60 and 72,930.40 is: 109,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,546.40 : 441,819.60 = 72,930.40 : x
  2. Step 2: Convert to fraction form
    294,546.40/441,819.60 = 72,930.40/x
  3. Step 3: Cross multiply
    294,546.40x = 441,819.60 × 72,930.40
  4. Step 4: Simplify right side
    294,546.40x = 32,222,080,155.84
  5. Step 5: Solve for x
    x = 32,222,080,155.84/294,546.40
  6. Step 6: Final answer
    x = 109,395.60

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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.