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Finding the Fourth Proportional to 479,373.09, 719,158.03 and 142,383.72

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Solution

The fourth proportional to 479,373.09, 719,158.03 and 142,383.72 is: 213,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,373.09 : 719,158.03 = 142,383.72 : x
  2. Step 2: Convert to fraction form
    479,373.09/719,158.03 = 142,383.72/x
  3. Step 3: Cross multiply
    479,373.09x = 719,158.03 × 142,383.72
  4. Step 4: Simplify right side
    479,373.09x = 102,396,397,920.16
  5. Step 5: Solve for x
    x = 102,396,397,920.16/479,373.09
  6. Step 6: Final answer
    x = 213,604.81

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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.