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Finding the Fourth Proportional to 236,430.96, 354,649.53 and 78,659.41

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Solution

The fourth proportional to 236,430.96, 354,649.53 and 78,659.41 is: 117,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,430.96 : 354,649.53 = 78,659.41 : x
  2. Step 2: Convert to fraction form
    236,430.96/354,649.53 = 78,659.41/x
  3. Step 3: Cross multiply
    236,430.96x = 354,649.53 × 78,659.41
  4. Step 4: Simplify right side
    236,430.96x = 27,896,522,786.58
  5. Step 5: Solve for x
    x = 27,896,522,786.58/236,430.96
  6. Step 6: Final answer
    x = 117,990.15

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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.