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Finding the Fourth Proportional to 335,505, 503,257.52 and 86,187

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Solution

The fourth proportional to 335,505, 503,257.52 and 86,187 is: 129,280.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,505 : 503,257.52 = 86,187 : x
  2. Step 2: Convert to fraction form
    335,505/503,257.52 = 86,187/x
  3. Step 3: Cross multiply
    335,505x = 503,257.52 × 86,187
  4. Step 4: Simplify right side
    335,505x = 43,374,255,876.24
  5. Step 5: Solve for x
    x = 43,374,255,876.24/335,505
  6. Step 6: Final answer
    x = 129,280.51

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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.