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Finding the Fourth Proportional to 389,060.54, 536,903.55 and 210,212.54

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Solution

The fourth proportional to 389,060.54, 536,903.55 and 210,212.54 is: 290,093.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,060.54 : 536,903.55 = 210,212.54 : x
  2. Step 2: Convert to fraction form
    389,060.54/536,903.55 = 210,212.54/x
  3. Step 3: Cross multiply
    389,060.54x = 536,903.55 × 210,212.54
  4. Step 4: Simplify right side
    389,060.54x = 112,863,856,296.00
  5. Step 5: Solve for x
    x = 112,863,856,296.00/389,060.54
  6. Step 6: Final answer
    x = 290,093.30

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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.