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Finding the Fourth Proportional to 236,812.60, 355,202.70 and 76,886.20

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Solution

The fourth proportional to 236,812.60, 355,202.70 and 76,886.20 is: 115,324.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,812.60 : 355,202.70 = 76,886.20 : x
  2. Step 2: Convert to fraction form
    236,812.60/355,202.70 = 76,886.20/x
  3. Step 3: Cross multiply
    236,812.60x = 355,202.70 × 76,886.20
  4. Step 4: Simplify right side
    236,812.60x = 27,310,185,832.74
  5. Step 5: Solve for x
    x = 27,310,185,832.74/236,812.60
  6. Step 6: Final answer
    x = 115,324.04

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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.