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Finding the Fourth Proportional to 479,076.34, 718,680.12 and 163,448.50

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Solution

The fourth proportional to 479,076.34, 718,680.12 and 163,448.50 is: 245,195.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,076.34 : 718,680.12 = 163,448.50 : x
  2. Step 2: Convert to fraction form
    479,076.34/718,680.12 = 163,448.50/x
  3. Step 3: Cross multiply
    479,076.34x = 718,680.12 × 163,448.50
  4. Step 4: Simplify right side
    479,076.34x = 117,467,187,593.82
  5. Step 5: Solve for x
    x = 117,467,187,593.82/479,076.34
  6. Step 6: Final answer
    x = 245,195.13

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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.