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Finding the Fourth Proportional to 236,813.76, 355,276.65 and 76,889.38

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Solution

The fourth proportional to 236,813.76, 355,276.65 and 76,889.38 is: 115,352.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,813.76 : 355,276.65 = 76,889.38 : x
  2. Step 2: Convert to fraction form
    236,813.76/355,276.65 = 76,889.38/x
  3. Step 3: Cross multiply
    236,813.76x = 355,276.65 × 76,889.38
  4. Step 4: Simplify right side
    236,813.76x = 27,317,001,346.98
  5. Step 5: Solve for x
    x = 27,317,001,346.98/236,813.76
  6. Step 6: Final answer
    x = 115,352.26

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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.