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Finding the Fourth Proportional to 279,102.06, 418,540.40 and 108,233.81

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Solution

The fourth proportional to 279,102.06, 418,540.40 and 108,233.81 is: 162,307.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,102.06 : 418,540.40 = 108,233.81 : x
  2. Step 2: Convert to fraction form
    279,102.06/418,540.40 = 108,233.81/x
  3. Step 3: Cross multiply
    279,102.06x = 418,540.40 × 108,233.81
  4. Step 4: Simplify right side
    279,102.06x = 45,300,221,472.46
  5. Step 5: Solve for x
    x = 45,300,221,472.46/279,102.06
  6. Step 6: Final answer
    x = 162,307.01

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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.