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Finding the Fourth Proportional to 384,843.90, 531,085.37 and 215,078.03

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Solution

The fourth proportional to 384,843.90, 531,085.37 and 215,078.03 is: 296,808.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,843.90 : 531,085.37 = 215,078.03 : x
  2. Step 2: Convert to fraction form
    384,843.90/531,085.37 = 215,078.03/x
  3. Step 3: Cross multiply
    384,843.90x = 531,085.37 × 215,078.03
  4. Step 4: Simplify right side
    384,843.90x = 114,224,791,410.60
  5. Step 5: Solve for x
    x = 114,224,791,410.60/384,843.90
  6. Step 6: Final answer
    x = 296,808.11

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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.