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Finding the Fourth Proportional to 173,619.20, 260,443.20 and 55,287.20

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Solution

The fourth proportional to 173,619.20, 260,443.20 and 55,287.20 is: 82,935.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,619.20 : 260,443.20 = 55,287.20 : x
  2. Step 2: Convert to fraction form
    173,619.20/260,443.20 = 55,287.20/x
  3. Step 3: Cross multiply
    173,619.20x = 260,443.20 × 55,287.20
  4. Step 4: Simplify right side
    173,619.20x = 14,399,175,287.04
  5. Step 5: Solve for x
    x = 14,399,175,287.04/173,619.20
  6. Step 6: Final answer
    x = 82,935.39

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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.