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Finding the Fourth Proportional to 236,542.76, 354,828.86 and 78,785.32

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Solution

The fourth proportional to 236,542.76, 354,828.86 and 78,785.32 is: 118,182.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,542.76 : 354,828.86 = 78,785.32 : x
  2. Step 2: Convert to fraction form
    236,542.76/354,828.86 = 78,785.32/x
  3. Step 3: Cross multiply
    236,542.76x = 354,828.86 × 78,785.32
  4. Step 4: Simplify right side
    236,542.76x = 27,955,305,280.34
  5. Step 5: Solve for x
    x = 27,955,305,280.34/236,542.76
  6. Step 6: Final answer
    x = 118,182.88

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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.