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Finding the Fourth Proportional to 279,595.29, 418,978.22 and 205,360.41

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Solution

The fourth proportional to 279,595.29, 418,978.22 and 205,360.41 is: 307,736.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,595.29 : 418,978.22 = 205,360.41 : x
  2. Step 2: Convert to fraction form
    279,595.29/418,978.22 = 205,360.41/x
  3. Step 3: Cross multiply
    279,595.29x = 418,978.22 × 205,360.41
  4. Step 4: Simplify right side
    279,595.29x = 86,041,540,739.79
  5. Step 5: Solve for x
    x = 86,041,540,739.79/279,595.29
  6. Step 6: Final answer
    x = 307,736.01

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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.