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Finding the Fourth Proportional to 262,287.60, 393,528.60 and 84,800.40

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Solution

The fourth proportional to 262,287.60, 393,528.60 and 84,800.40 is: 127,232.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,287.60 : 393,528.60 = 84,800.40 : x
  2. Step 2: Convert to fraction form
    262,287.60/393,528.60 = 84,800.40/x
  3. Step 3: Cross multiply
    262,287.60x = 393,528.60 × 84,800.40
  4. Step 4: Simplify right side
    262,287.60x = 33,371,382,691.44
  5. Step 5: Solve for x
    x = 33,371,382,691.44/262,287.60
  6. Step 6: Final answer
    x = 127,232.03

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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.