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Finding the Fourth Proportional to 335,917, 503,904.66 and 86,599

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Solution

The fourth proportional to 335,917, 503,904.66 and 86,599 is: 129,906.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,917 : 503,904.66 = 86,599 : x
  2. Step 2: Convert to fraction form
    335,917/503,904.66 = 86,599/x
  3. Step 3: Cross multiply
    335,917x = 503,904.66 × 86,599
  4. Step 4: Simplify right side
    335,917x = 43,637,639,651.34
  5. Step 5: Solve for x
    x = 43,637,639,651.34/335,917
  6. Step 6: Final answer
    x = 129,906.02

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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.