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Finding the Fourth Proportional to 268,908.20, 403,362.30 and 174,429.80

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Solution

The fourth proportional to 268,908.20, 403,362.30 and 174,429.80 is: 261,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,908.20 : 403,362.30 = 174,429.80 : x
  2. Step 2: Convert to fraction form
    268,908.20/403,362.30 = 174,429.80/x
  3. Step 3: Cross multiply
    268,908.20x = 403,362.30 × 174,429.80
  4. Step 4: Simplify right side
    268,908.20x = 70,358,405,316.54
  5. Step 5: Solve for x
    x = 70,358,405,316.54/268,908.20
  6. Step 6: Final answer
    x = 261,644.70

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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.