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Finding the Fourth Proportional to 306,558.54, 459,892.76 and 126,643.95

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Solution

The fourth proportional to 306,558.54, 459,892.76 and 126,643.95 is: 189,988.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,558.54 : 459,892.76 = 126,643.95 : x
  2. Step 2: Convert to fraction form
    306,558.54/459,892.76 = 126,643.95/x
  3. Step 3: Cross multiply
    306,558.54x = 459,892.76 × 126,643.95
  4. Step 4: Simplify right side
    306,558.54x = 58,242,635,069.58
  5. Step 5: Solve for x
    x = 58,242,635,069.58/306,558.54
  6. Step 6: Final answer
    x = 189,988.62

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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.