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Finding the Fourth Proportional to 236,543.30, 354,871.65 and 78,773.12

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Solution

The fourth proportional to 236,543.30, 354,871.65 and 78,773.12 is: 118,178.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,543.30 : 354,871.65 = 78,773.12 : x
  2. Step 2: Convert to fraction form
    236,543.30/354,871.65 = 78,773.12/x
  3. Step 3: Cross multiply
    236,543.30x = 354,871.65 × 78,773.12
  4. Step 4: Simplify right side
    236,543.30x = 27,954,347,070.05
  5. Step 5: Solve for x
    x = 27,954,347,070.05/236,543.30
  6. Step 6: Final answer
    x = 118,178.56

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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.