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Finding the Fourth Proportional to 479,436.78, 718,649.56 and 159,502.96

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Solution

The fourth proportional to 479,436.78, 718,649.56 and 159,502.96 is: 239,086.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,436.78 : 718,649.56 = 159,502.96 : x
  2. Step 2: Convert to fraction form
    479,436.78/718,649.56 = 159,502.96/x
  3. Step 3: Cross multiply
    479,436.78x = 718,649.56 × 159,502.96
  4. Step 4: Simplify right side
    479,436.78x = 114,626,732,022.70
  5. Step 5: Solve for x
    x = 114,626,732,022.70/479,436.78
  6. Step 6: Final answer
    x = 239,086.23

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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.