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Finding the Fourth Proportional to 478,613.14, 660,490.50 and 263,760.88

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Solution

The fourth proportional to 478,613.14, 660,490.50 and 263,760.88 is: 363,992.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,613.14 : 660,490.50 = 263,760.88 : x
  2. Step 2: Convert to fraction form
    478,613.14/660,490.50 = 263,760.88/x
  3. Step 3: Cross multiply
    478,613.14x = 660,490.50 × 263,760.88
  4. Step 4: Simplify right side
    478,613.14x = 174,211,555,511.64
  5. Step 5: Solve for x
    x = 174,211,555,511.64/478,613.14
  6. Step 6: Final answer
    x = 363,992.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.