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Finding the Fourth Proportional to 335,508, 503,262 and 86,190

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Solution

The fourth proportional to 335,508, 503,262 and 86,190 is: 129,285

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,508 : 503,262 = 86,190 : x
  2. Step 2: Convert to fraction form
    335,508/503,262 = 86,190/x
  3. Step 3: Cross multiply
    335,508x = 503,262 × 86,190
  4. Step 4: Simplify right side
    335,508x = 43,376,151,780
  5. Step 5: Solve for x
    x = 43,376,151,780/335,508
  6. Step 6: Final answer
    x = 129,285

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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.