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Finding the Fourth Proportional to 293,080.40, 439,620.60 and 82,715.60

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Solution

The fourth proportional to 293,080.40, 439,620.60 and 82,715.60 is: 124,073.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,080.40 : 439,620.60 = 82,715.60 : x
  2. Step 2: Convert to fraction form
    293,080.40/439,620.60 = 82,715.60/x
  3. Step 3: Cross multiply
    293,080.40x = 439,620.60 × 82,715.60
  4. Step 4: Simplify right side
    293,080.40x = 36,363,481,701.36
  5. Step 5: Solve for x
    x = 36,363,481,701.36/293,080.40
  6. Step 6: Final answer
    x = 124,073.40

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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.