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Finding the Fourth Proportional to 294,287.60, 441,431.40 and 72,671.60

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Solution

The fourth proportional to 294,287.60, 441,431.40 and 72,671.60 is: 109,007.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,287.60 : 441,431.40 = 72,671.60 : x
  2. Step 2: Convert to fraction form
    294,287.60/441,431.40 = 72,671.60/x
  3. Step 3: Cross multiply
    294,287.60x = 441,431.40 × 72,671.60
  4. Step 4: Simplify right side
    294,287.60x = 32,079,526,128.24
  5. Step 5: Solve for x
    x = 32,079,526,128.24/294,287.60
  6. Step 6: Final answer
    x = 109,007.40

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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.