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Finding the Fourth Proportional to 404,972.80, 607,459.20 and 168,236.80

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Solution

The fourth proportional to 404,972.80, 607,459.20 and 168,236.80 is: 252,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,972.80 : 607,459.20 = 168,236.80 : x
  2. Step 2: Convert to fraction form
    404,972.80/607,459.20 = 168,236.80/x
  3. Step 3: Cross multiply
    404,972.80x = 607,459.20 × 168,236.80
  4. Step 4: Simplify right side
    404,972.80x = 102,196,991,938.56
  5. Step 5: Solve for x
    x = 102,196,991,938.56/404,972.80
  6. Step 6: Final answer
    x = 252,355.20

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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.