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Finding the Fourth Proportional to 384,799.50, 531,034.65 and 215,034.03

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Solution

The fourth proportional to 384,799.50, 531,034.65 and 215,034.03 is: 296,753.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,799.50 : 531,034.65 = 215,034.03 : x
  2. Step 2: Convert to fraction form
    384,799.50/531,034.65 = 215,034.03/x
  3. Step 3: Cross multiply
    384,799.50x = 531,034.65 × 215,034.03
  4. Step 4: Simplify right side
    384,799.50x = 114,190,520,859.14
  5. Step 5: Solve for x
    x = 114,190,520,859.14/384,799.50
  6. Step 6: Final answer
    x = 296,753.30

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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.