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Finding the Fourth Proportional to 478,815.22, 718,386.86 and 163,493.56

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Solution

The fourth proportional to 478,815.22, 718,386.86 and 163,493.56 is: 245,296.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,815.22 : 718,386.86 = 163,493.56 : x
  2. Step 2: Convert to fraction form
    478,815.22/718,386.86 = 163,493.56/x
  3. Step 3: Cross multiply
    478,815.22x = 718,386.86 × 163,493.56
  4. Step 4: Simplify right side
    478,815.22x = 117,451,625,198.62
  5. Step 5: Solve for x
    x = 117,451,625,198.62/478,815.22
  6. Step 6: Final answer
    x = 245,296.35

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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.