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Finding the Fourth Proportional to 236,440.80, 354,693.60 and 78,652.80

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Solution

The fourth proportional to 236,440.80, 354,693.60 and 78,652.80 is: 117,989.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,440.80 : 354,693.60 = 78,652.80 : x
  2. Step 2: Convert to fraction form
    236,440.80/354,693.60 = 78,652.80/x
  3. Step 3: Cross multiply
    236,440.80x = 354,693.60 × 78,652.80
  4. Step 4: Simplify right side
    236,440.80x = 27,897,644,782.08
  5. Step 5: Solve for x
    x = 27,897,644,782.08/236,440.80
  6. Step 6: Final answer
    x = 117,989.98

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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.