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Finding the Fourth Proportional to 378,661.60, 567,992.40 and 112,463.20

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Solution

The fourth proportional to 378,661.60, 567,992.40 and 112,463.20 is: 168,694.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,661.60 : 567,992.40 = 112,463.20 : x
  2. Step 2: Convert to fraction form
    378,661.60/567,992.40 = 112,463.20/x
  3. Step 3: Cross multiply
    378,661.60x = 567,992.40 × 112,463.20
  4. Step 4: Simplify right side
    378,661.60x = 63,878,242,879.68
  5. Step 5: Solve for x
    x = 63,878,242,879.68/378,661.60
  6. Step 6: Final answer
    x = 168,694.80

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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.