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Finding the Fourth Proportional to 479,676.73, 719,389.71 and 142,626.61

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Solution

The fourth proportional to 479,676.73, 719,389.71 and 142,626.61 is: 213,902.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,676.73 : 719,389.71 = 142,626.61 : x
  2. Step 2: Convert to fraction form
    479,676.73/719,389.71 = 142,626.61/x
  3. Step 3: Cross multiply
    479,676.73x = 719,389.71 × 142,626.61
  4. Step 4: Simplify right side
    479,676.73x = 102,604,115,606.18
  5. Step 5: Solve for x
    x = 102,604,115,606.18/479,676.73
  6. Step 6: Final answer
    x = 213,902.63

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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.