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Finding the Fourth Proportional to 319,806.94, 479,622.84 and 120,111.88

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Solution

The fourth proportional to 319,806.94, 479,622.84 and 120,111.88 is: 180,134.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,806.94 : 479,622.84 = 120,111.88 : x
  2. Step 2: Convert to fraction form
    319,806.94/479,622.84 = 120,111.88/x
  3. Step 3: Cross multiply
    319,806.94x = 479,622.84 × 120,111.88
  4. Step 4: Simplify right side
    319,806.94x = 57,608,401,003.34
  5. Step 5: Solve for x
    x = 57,608,401,003.34/319,806.94
  6. Step 6: Final answer
    x = 180,134.93

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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.