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Finding the Fourth Proportional to 479,072.49, 718,400.11 and 137,440.54

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Solution

The fourth proportional to 479,072.49, 718,400.11 and 137,440.54 is: 206,100.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,072.49 : 718,400.11 = 137,440.54 : x
  2. Step 2: Convert to fraction form
    479,072.49/718,400.11 = 137,440.54/x
  3. Step 3: Cross multiply
    479,072.49x = 718,400.11 × 137,440.54
  4. Step 4: Simplify right side
    479,072.49x = 98,737,299,054.46
  5. Step 5: Solve for x
    x = 98,737,299,054.46/479,072.49
  6. Step 6: Final answer
    x = 206,100.96

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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.