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Finding the Fourth Proportional to 479,142.87, 718,558.80 and 159,208.82

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Solution

The fourth proportional to 479,142.87, 718,558.80 and 159,208.82 is: 238,761.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,142.87 : 718,558.80 = 159,208.82 : x
  2. Step 2: Convert to fraction form
    479,142.87/718,558.80 = 159,208.82/x
  3. Step 3: Cross multiply
    479,142.87x = 718,558.80 × 159,208.82
  4. Step 4: Simplify right side
    479,142.87x = 114,400,895,055.82
  5. Step 5: Solve for x
    x = 114,400,895,055.82/479,142.87
  6. Step 6: Final answer
    x = 238,761.55

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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.