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Finding the Fourth Proportional to 478,662.08, 718,126.18 and 208,813.82

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Solution

The fourth proportional to 478,662.08, 718,126.18 and 208,813.82 is: 313,278.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,662.08 : 718,126.18 = 208,813.82 : x
  2. Step 2: Convert to fraction form
    478,662.08/718,126.18 = 208,813.82/x
  3. Step 3: Cross multiply
    478,662.08x = 718,126.18 × 208,813.82
  4. Step 4: Simplify right side
    478,662.08x = 149,954,670,887.81
  5. Step 5: Solve for x
    x = 149,954,670,887.81/478,662.08
  6. Step 6: Final answer
    x = 313,278.78

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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.