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Finding the Fourth Proportional to 236,358.75, 354,541.22 and 78,587.21

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Solution

The fourth proportional to 236,358.75, 354,541.22 and 78,587.21 is: 117,881.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,358.75 : 354,541.22 = 78,587.21 : x
  2. Step 2: Convert to fraction form
    236,358.75/354,541.22 = 78,587.21/x
  3. Step 3: Cross multiply
    236,358.75x = 354,541.22 × 78,587.21
  4. Step 4: Simplify right side
    236,358.75x = 27,862,403,144.15
  5. Step 5: Solve for x
    x = 27,862,403,144.15/236,358.75
  6. Step 6: Final answer
    x = 117,881.83

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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.