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Finding the Fourth Proportional to 338,495.76, 507,757.56 and 279,221.04

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Solution

The fourth proportional to 338,495.76, 507,757.56 and 279,221.04 is: 418,843.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,495.76 : 507,757.56 = 279,221.04 : x
  2. Step 2: Convert to fraction form
    338,495.76/507,757.56 = 279,221.04/x
  3. Step 3: Cross multiply
    338,495.76x = 507,757.56 × 279,221.04
  4. Step 4: Simplify right side
    338,495.76x = 141,776,593,971.06
  5. Step 5: Solve for x
    x = 141,776,593,971.06/338,495.76
  6. Step 6: Final answer
    x = 418,843.04

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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.