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Finding the Fourth Proportional to 306,559.54, 459,894.26 and 126,644.95

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Solution

The fourth proportional to 306,559.54, 459,894.26 and 126,644.95 is: 189,990.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,559.54 : 459,894.26 = 126,644.95 : x
  2. Step 2: Convert to fraction form
    306,559.54/459,894.26 = 126,644.95/x
  3. Step 3: Cross multiply
    306,559.54x = 459,894.26 × 126,644.95
  4. Step 4: Simplify right side
    306,559.54x = 58,243,285,562.99
  5. Step 5: Solve for x
    x = 58,243,285,562.99/306,559.54
  6. Step 6: Final answer
    x = 189,990.13

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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.