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Finding the Fourth Proportional to 236,871.60, 355,291.20 and 76,945.20

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Solution

The fourth proportional to 236,871.60, 355,291.20 and 76,945.20 is: 115,412.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,871.60 : 355,291.20 = 76,945.20 : x
  2. Step 2: Convert to fraction form
    236,871.60/355,291.20 = 76,945.20/x
  3. Step 3: Cross multiply
    236,871.60x = 355,291.20 × 76,945.20
  4. Step 4: Simplify right side
    236,871.60x = 27,337,952,442.24
  5. Step 5: Solve for x
    x = 27,337,952,442.24/236,871.60
  6. Step 6: Final answer
    x = 115,412.54

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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.