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Finding the Fourth Proportional to 479,930.41, 720,026.90 and 210,009.48

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Solution

The fourth proportional to 479,930.41, 720,026.90 and 210,009.48 is: 315,071.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,930.41 : 720,026.90 = 210,009.48 : x
  2. Step 2: Convert to fraction form
    479,930.41/720,026.90 = 210,009.48/x
  3. Step 3: Cross multiply
    479,930.41x = 720,026.90 × 210,009.48
  4. Step 4: Simplify right side
    479,930.41x = 151,212,474,855.01
  5. Step 5: Solve for x
    x = 151,212,474,855.01/479,930.41
  6. Step 6: Final answer
    x = 315,071.67

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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.