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Finding the Fourth Proportional to 236,356.47, 354,537.78 and 78,584.92

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Solution

The fourth proportional to 236,356.47, 354,537.78 and 78,584.92 is: 117,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,356.47 : 354,537.78 = 78,584.92 : x
  2. Step 2: Convert to fraction form
    236,356.47/354,537.78 = 78,584.92/x
  3. Step 3: Cross multiply
    236,356.47x = 354,537.78 × 78,584.92
  4. Step 4: Simplify right side
    236,356.47x = 27,861,323,078.28
  5. Step 5: Solve for x
    x = 27,861,323,078.28/236,356.47
  6. Step 6: Final answer
    x = 117,878.40

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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.