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Finding the Fourth Proportional to 215,699.76, 323,558.28 and 104,865.84

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Solution

The fourth proportional to 215,699.76, 323,558.28 and 104,865.84 is: 157,302.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,699.76 : 323,558.28 = 104,865.84 : x
  2. Step 2: Convert to fraction form
    215,699.76/323,558.28 = 104,865.84/x
  3. Step 3: Cross multiply
    215,699.76x = 323,558.28 × 104,865.84
  4. Step 4: Simplify right side
    215,699.76x = 33,930,210,821.16
  5. Step 5: Solve for x
    x = 33,930,210,821.16/215,699.76
  6. Step 6: Final answer
    x = 157,302.96

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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.