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Finding the Fourth Proportional to 268,323.70, 402,499.34 and 68,645.81

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Solution

The fourth proportional to 268,323.70, 402,499.34 and 68,645.81 is: 102,972.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,323.70 : 402,499.34 = 68,645.81 : x
  2. Step 2: Convert to fraction form
    268,323.70/402,499.34 = 68,645.81/x
  3. Step 3: Cross multiply
    268,323.70x = 402,499.34 × 68,645.81
  4. Step 4: Simplify right side
    268,323.70x = 27,629,893,218.77
  5. Step 5: Solve for x
    x = 27,629,893,218.77/268,323.70
  6. Step 6: Final answer
    x = 102,972.24

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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.