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Finding the Fourth Proportional to 478,709.64, 718,187.49 and 179,194.53

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Solution

The fourth proportional to 478,709.64, 718,187.49 and 179,194.53 is: 268,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,709.64 : 718,187.49 = 179,194.53 : x
  2. Step 2: Convert to fraction form
    478,709.64/718,187.49 = 179,194.53/x
  3. Step 3: Cross multiply
    478,709.64x = 718,187.49 × 179,194.53
  4. Step 4: Simplify right side
    478,709.64x = 128,695,269,722.43
  5. Step 5: Solve for x
    x = 128,695,269,722.43/478,709.64
  6. Step 6: Final answer
    x = 268,837.85

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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.