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Finding the Fourth Proportional to 236,543.76, 354,830.36 and 78,786.32

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Solution

The fourth proportional to 236,543.76, 354,830.36 and 78,786.32 is: 118,184.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,543.76 : 354,830.36 = 78,786.32 : x
  2. Step 2: Convert to fraction form
    236,543.76/354,830.36 = 78,786.32/x
  3. Step 3: Cross multiply
    236,543.76x = 354,830.36 × 78,786.32
  4. Step 4: Simplify right side
    236,543.76x = 27,955,778,288.68
  5. Step 5: Solve for x
    x = 27,955,778,288.68/236,543.76
  6. Step 6: Final answer
    x = 118,184.38

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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.