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Finding the Fourth Proportional to 382,764.73, 528,211.15 and 210,679.01

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Solution

The fourth proportional to 382,764.73, 528,211.15 and 210,679.01 is: 290,734.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,764.73 : 528,211.15 = 210,679.01 : x
  2. Step 2: Convert to fraction form
    382,764.73/528,211.15 = 210,679.01/x
  3. Step 3: Cross multiply
    382,764.73x = 528,211.15 × 210,679.01
  4. Step 4: Simplify right side
    382,764.73x = 111,283,001,558.54
  5. Step 5: Solve for x
    x = 111,283,001,558.54/382,764.73
  6. Step 6: Final answer
    x = 290,734.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.