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Finding the Fourth Proportional to 262,230.60, 393,345.90 and 84,743.40

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Solution

The fourth proportional to 262,230.60, 393,345.90 and 84,743.40 is: 127,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,230.60 : 393,345.90 = 84,743.40 : x
  2. Step 2: Convert to fraction form
    262,230.60/393,345.90 = 84,743.40/x
  3. Step 3: Cross multiply
    262,230.60x = 393,345.90 × 84,743.40
  4. Step 4: Simplify right side
    262,230.60x = 33,333,468,942.06
  5. Step 5: Solve for x
    x = 33,333,468,942.06/262,230.60
  6. Step 6: Final answer
    x = 127,115.10

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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.