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Finding the Fourth Proportional to 479,238.80, 718,735.14 and 142,199.72

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Solution

The fourth proportional to 479,238.80, 718,735.14 and 142,199.72 is: 213,263.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,238.80 : 718,735.14 = 142,199.72 : x
  2. Step 2: Convert to fraction form
    479,238.80/718,735.14 = 142,199.72/x
  3. Step 3: Cross multiply
    479,238.80x = 718,735.14 × 142,199.72
  4. Step 4: Simplify right side
    479,238.80x = 102,203,935,662.16
  5. Step 5: Solve for x
    x = 102,203,935,662.16/479,238.80
  6. Step 6: Final answer
    x = 213,263.07

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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.